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Wednesday, Sept 7, 2005 (DOY 05-243/19:00:00 to DOY 05-250/19:00:00 UTC)

Launch / Days since Launch = Nov. 7, 1996 / 3211 days
Start of Mapping / Days since Start of Mapping = April 1, 1999 / 2351 days
Total Mapping Orbits = 29,049
Total Orbits = 30,732 (1,683 Pre-Mapping Orbits)

Recent Events:

Background Sequences - MGS is currently in Relay 16 operations continuing the recovery from the Safe Mode entry on 05-238. No background, or mini-sequences are active. All science instruments remain off. Every effort is being made to expedite the recovery so that MOC can perform a CPROTO image of the suspected MPL site before seasonal changes degrade the atmosphere at the site.

Other - No Targeting Observations were performed this week. MGS has successfully completed 1,528 ROTOs to date.

Spacecraft Health:

Both SCPs have been transitioned from Safe Mode to Contingency mode. SCP-2 , which is currently the control SCP, has transitioned from Contingency mode to Relay 16 operation. This enables high data rate communications using the HGA.

Uplinks:

There were 221 uplinks to the spacecraft during the past week. They included health&status commands, as well as commands to reload memory and transition the spacecraft back to nominal operations. 10,139 command files have been radiated to the spacecraft since launch.

Upcoming Events:

On 05-253 (09/10/05) MGS will attempt a CPROTO image of the suspected MPL site.


Wednesday, August 31, 2005 (DOY 05-236/19:00:00 to DOY 05-243/19:00:00 UTC)

Launch / Days since Launch = Nov. 7, 1996 / 3204 days
Start of Mapping / Days since Start of Mapping = April 1, 1999 / 2344 days
Total Mapping Orbits = 28,964
Total Orbits = 30,647 (1,683 Pre-Mapping Orbits)

Recent Events:

Background Sequences - MGS is currently in SafeMode operating in a Sun Point mode. All background, and mini-sequences have been suspended.

Other - 5 Targeting Observations (4 ROTO & 1 CPROTO) were performed this week before the SafeMode entry. MGS has successfully completed 1,528 ROTOs to date.

Spacecraft Health:

On 05-238 (08/26/05) while processing the uplink of a MOC NIPC the spacecraft entered Safe Mode. During the NIPC processing the the control SCP (SCP-2) went silent, causing hardware on board to swap to SCP-1 autonomously. SCP-1 had encountered this condition on 05-211, and was still in Safe Mode. SCP-2 has since been rebooted, and good health indications are being received from both SCPs.

Uplinks:

There were 71 uplinks to the spacecraft during the past week. They included instrument commands (NIPC's), ephemeredes, SCP-2 reboot, and numerous commands to establish the health of the spacecraft after the Safe Mode Entry. 9,918 command files have been radiated to the spacecraft since launch.

Upcoming Events:

The condition of SCP memory on both processors will be established as part of the Safe Mode recovery procedure, and then both SCPs will be transferred to Contingency mode execution.


Wednesday, August 17, 2005 (DOY 05-222/19:00:00 to DOY 05-229/19:00:00 UTC)

Launch / Days since Launch = Nov. 7, 1996 / 3190 days
Start of Mapping / Days since Start of Mapping = April 1, 1999 / 2330 days
Total Mapping Orbits = 28,792
Total Orbits = 30,475 (1,683 Pre-Mapping Orbits)

Recent Events:

Background Sequences - MGS continues nominal Beta-Supplement operations for this period.

The spacecraft is operating nominally in performing the beta-supplement daily recording and transmission of science data. The mm455 sequence has executed successfully from 05-223 (08/11/05) and will terminate this evening. The mm456 sequence, successfully uplinked on 05-227 (08/15/05), will begin execution on 05-230 (08/18/05). The mm456 sequence will use a roll/yaw offset of 8 degrees.

Other - No Targeting Observations were performed this week. MGS has successfully completed 1,523 ROTOs to date.

Spacecraft Health:

All subsystems teams report nominal operations on the backup computer (SCP-2). The solar array elevation offset continues at 40 degrees. The swap to SCP-2 is still under investigation. The decision has been made to command a reboot of SCP-1 on 05-230 (08/18/05).

Uplinks:

There were 16 uplinks to the spacecraft during the past week. They included instrument commands (NIPC's), ephemeredes, and background sequence (MM455). 9,819 command files have been radiated to the spacecraft since launch.

Upcoming Events:

Assuming the SCP-1 reboot is successful at both recovering the SCP and restoring telemetry, ROTOs will resume on 05-237 (08/25/05). Radio Science Earth Occultation Egress scans are planned for 05-254 (09/11/05). MOLA Earth laser detection tests are under study for the second half of September.


Wednesday, August 10, 2005 (DOY 05-215/19:00:00 to DOY 05-222/19:00:00 UTC)

Launch / Days since Launch = Nov. 7, 1996 / 3183 days
Start of Mapping / Days since Start of Mapping = April 1, 1999 / 2323 days
Total Mapping Orbits = 28,707
Total Orbits = 30,390 (1,683 Pre-Mapping Orbits)

Recent Events:

Background Sequences - MGS continues nominal Beta-Supplement operations for this period.

The spacecraft is operating nominally in performing the beta-supplement daily recording and transmission of science data. The mm454 sequence has executed successfully from 05-216 (08/04/05) and will terminate this evening. The mm455 sequence, successfully uplinked on 05-220 (08/08/05), will begin execution on 05-223 (08/11/05). The mm455 sequence will use a roll/yaw offset of 8 degrees.

Other - No Targeting Observations were performed this week. MGS has successfully completed 1,523 ROTOs to date.

Spacecraft Health:

All subsystems teams report nominal operations on the backup computer (SCP-2). The solar array elevation offset continues at 40 degrees. Investigation is continuing as to the cause of the swap and options for recovery of SCP-1.

Uplinks:

There were 9 uplinks to the spacecraft during the past week. They included instrument commands (NIPC's), ephemeredes, and background sequence (MM455). 9,795 command files have been radiated to the spacecraft since launch.

Upcoming Events:

All maneuvers have been temporarily suspended while the spacecraft team investigates options for 1) restoring SCP telemetry in mission mode, 2) recovering SCP1. Normal relay 16 science is continuing.


Wednesday, August 03, 2005 (DOY 05-208/19:00:00 to DOY 05-215/19:00:00 UTC)

Launch / Days since Launch = Nov. 7, 1996 / 3176 days
Start of Mapping / Days since Start of Mapping = April 1, 1999 / 2316 days
Total Mapping Orbits = 28,621
Total Orbits = 30,304 (1,683 Pre-Mapping Orbits)

Recent Events:

Background Sequences - MGS continues nominal Beta-Supplement operations for this period.

The spacecraft is operating nominally in performing the beta-supplement daily recording and transmission of science data. The mm453 sequence has executed successfully from 05-207 (07/28/05) and will terminate this evening. The mm454 sequence, successfully uplinked on 05-214 (08/02/05), will begin execution on 05-216 (08/04/05). The mm454 sequence will use a roll/yaw offset of 8 degrees.

Other - Ten Targeting Observations (8 ROTO & 2 CPROTO) were successfully performed this week by the mz494 and mz495 mini-sequences. MGS has successfully completed 1,523 ROTOs to date.

Spacecraft Health:

On 07/30/05 (05-211) at 16:02 MGS experienced a swap to the backup computer. MGS is a hot backup system and science has continued nominally. MGS is not in Cmode, it is performing its normal Relay 16 science operations including imaging maneuvers. All subsystems teams report nominal operations on the backup computer (SCP-2). The solar array elevation offset continues at 40 degrees. Investigation is underway as to the cause of the swap. There are indications that SCP1 can be recovered to a nominal state. The investigation is ongoing.

Uplinks:

There were 22 uplinks to the spacecraft during the past week. They included instrument commands (NIPC's), ephemeredes, ROTO mini-sequences (MZ495), and background sequence (MM454). 9,786 command files have been radiated to the spacecraft since launch.

Upcoming Events:

All maneuvers have been temporarily suspended while the spacecraft team investigates options for 1) restoring SCP telemetry in mission mode, 2) recovering SCP1. Normal relay 16 science is continuing.


Wednesday, July 27, 2005 (DOY 05-201/19:00:00 to DOY 05-208/19:00:00 UTC)

Launch / Days since Launch = Nov. 7, 1996 / 3169 days
Start of Mapping / Days since Start of Mapping = April 1, 1999 / 2309 days
Total Mapping Orbits = 28,536
Total Orbits = 30,219 (1,683 Pre-Mapping Orbits)

Recent Events:

Background Sequences - MGS continues nominal Beta-Supplement operations for this period.

The spacecraft is operating nominally in performing the beta-supplement daily recording and transmission of science data. The mm452 sequence has executed successfully from 05-202 (07/21/05) and will terminate this evening. The mm453 sequence, successfully uplinked on 05-208 (07/27/05), will begin execution on 05-209 (07/28/05). The mm453 sequence will use a roll/yaw offset of 8 degrees.

Other - Eleven Targeting Observations (10 ROTO & 1 CPROTO) were successfully performed this week by the mz492 and mz493 mini-sequences. MGS has successfully completed 1,513 ROTOs to date.

Spacecraft Health:

MGS health is good. All subsystems teams report nominal operations. The solar array elevation offset continues at 40 degrees.

Uplinks:

There were 17 uplinks to the spacecraft during the past week. They included instrument commands (NIPC's), ephemeredes, ROTO mini-sequences (MZ493,MZ494), and background sequence (MM453). 9,754 command files have been radiated to the spacecraft since launch.

Upcoming Events:

MOLA Earth Laser Viewing test being studied for August/September. Eight Radio Science Earth Occultation Egress Scans are planned for 08/06/05.


Wednesday, July 20, 2005 (DOY 05-187/19:00:00 to DOY 05-201/19:00:00 UTC)

Launch / Days since Launch = Nov. 7, 1996 / 3162 days
Start of Mapping / Days since Start of Mapping = April 1, 1999 / 2302 days
Total Mapping Orbits = 28,451
Total Orbits = 30,134 (1,683 Pre-Mapping Orbits)

Recent Events:

Background Sequences - MGS continues nominal Beta-Supplement operations for this period.

The spacecraft is operating nominally in performing the beta-supplement daily recording and transmission of science data. The mm451 sequence has executed successfully from 05-195 (07/14/05) and will terminate this evening. The mm452 sequence, successfully uplinked on 05-200 (07/19/05), will begin execution on 05-201 (07/21/05). The mm452 sequence will use a roll/yaw offset of 8 degrees.

Other - Eight Targeting Observations (5 ROTO & 3 CPROTO) were successfully performed this week by the mz490 and mz491 mini-sequences. MGS has successfully completed 1,503 ROTOs to date.

Spacecraft Health:

MGS health is good. All subsystems teams report nominal operations. The solar array elevation offset continues at 40 degrees.

Uplinks:

There were 13 uplinks to the spacecraft during the past week. They included instrument commands (NIPC's), ephemeredes, ROTO mini-sequences (MZ491,MZ492), and background sequence (MM452). 9,737 command files have been radiated to the spacecraft since launch.

Upcoming Events:

MOLA Earth Laser Viewing test being studied for August/September.


Wednesday, July 13, 2005 (DOY 05-187/19:00:00 to DOY 05-194/19:00:00 UTC)

Launch / Days since Launch = Nov. 7, 1996 / 3155 days
Start of Mapping / Days since Start of Mapping = April 1, 1999 / 2295 days
Total Mapping Orbits = 28,364
Total Orbits = 30,047 (1,683 Pre-Mapping Orbits)

Recent Events:

Background Sequences - MGS continues nominal Beta-Supplement operations for this period.

The spacecraft is operating nominally in performing the beta-supplement daily recording and transmission of science data. The mm450 sequence has executed successfully from 05-188 (07/07/05) and will terminate this evening. The mm451 sequence, successfully uplinked on 05-193 (07/12/05), will begin execution on 05-195 (07/14/05). The mm451 sequence will use a roll/yaw offset of 7 degrees. MGS completed 30000 total orbits during MM450.

Other - Eight Targeting Observations (7 ROTO & 1 CPROTO) were successfully performed this week by the mz488 and mz489 mini-sequences. MGS has successfully completed 1,494 ROTOs to date.

Spacecraft Health:

MGS health is good. All subsystems teams report nominal operations. The solar array elevation offset continues at 40 degrees.

Uplinks:

There were 20 uplinks to the spacecraft during the past week. They included instrument commands (NIPC's), ephemeredes, ROTO mini-sequences (MZ488,MZ489,MZ490), and background sequence (MM451). 9,724 command files have been radiated to the spacecraft since launch.

Upcoming Events:

MOLA Earth Laser Viewing test being studied for August/September.


Wednesday, July 06, 2005 (DOY 05-180/19:00:00 to DOY 05-187/19:00:00 UTC)

Launch / Days since Launch = Nov. 7, 1996 / 3148 days
Start of Mapping / Days since Start of Mapping = April 1, 1999 / 2288 days
Total Mapping Orbits = 28,280
Total Orbits = 29,963 (1,683 Pre-Mapping Orbits)

Recent Events:
Background Sequences – MGS continues nominal Beta-Supplement operations for this period.

The spacecraft is operating nominally in performing the beta-supplement daily recording and transmission of science data. The mm449 sequence has executed successfully from 05-181 (06/30/05) and will terminate this evening. The mm450 sequence, successfully uplinked on 05-186 (07/05/05), will begin execution on 05-187 (06/06/05). The mm450 sequence will use a roll/yaw offset of 6 degrees.

Other – Eleven Targeting Observations (All ROTOs ) were successfully performed this week by the mz486 and mz487 mini-sequences. MGS has successfully completed 1,486 ROTOs to date.

Spacecraft Health:

MGS health is good. All subsystems teams report nominal operations. The solar array elevation offset continues at 40 degrees.

Uplinks:

There were 21 uplinks to the spacecraft during the past week. They included instrument commands (NIPC’s), ephemeredes, and background sequence (MM450). 9,704 command files have been radiated to the spacecraft since launch.

Upcoming Events:

MGS will complete 30,000 total orbits on July 9th.


Wednesday, June 29, 2005 (DOY 05-173/19:00:00 to DOY 05-180/19:00:00 UTC)

Launch / Days since Launch = Nov. 7, 1996 / 3141 days
Start of Mapping / Days since Start of Mapping = April 1, 1999 / 2281 days
Total Mapping Orbits = 28,193
Total Orbits = 29,876 (1,683 Pre-Mapping Orbits)

Recent Events:
Background Sequences - MGS continues nominal Beta-Supplement operations for this period.

The spacecraft is operating nominally in performing the beta-supplement daily recording and transmission of science data. The mm448 sequence has executed successfully from 05-174 (06/23/05) and will terminate this evening. The mm449 sequence, successfully uplinked on 05-179 (06/28/05), will begin execution on 05-181 (06/30/05). The mm449 sequence will use a roll/yaw offset of 5 degrees.

Other - No Targeting Observations were performed this week. The atmosphere was determined to be too dusty. MGS has successfully completed 1,474 ROTOs to date.

Spacecraft Health:

MGS health is good. All subsystems teams report nominal operations. The solar array elevation offset continues at 40 degrees.

Uplinks:
There were 7 uplinks to the spacecraft during the past week. They included instrument commands (NIPC's), ephemeredes, and background sequence (MM449). 9,683 command files have been radiated to the spacecraft since launch.

Upcoming Events:
MGS will complete 30,000 total orbits on July 9th.


Wednesday, June 22, 2005 (DOY 05-166/19:00:00 to DOY 05-173/19:00:00 UTC)

Launch / Days since Launch = Nov. 7, 1996 / 3134 days
Start of Mapping / Days since Start of Mapping = April 1, 1999 / 2274 days
Total Mapping Orbits = 28,108
Total Orbits = 29,791 (1,683 Pre-Mapping Orbits)

Recent Events:
Background Sequences – MGS continues nominal Beta-Supplement operations for this period.

The spacecraft is operating nominally in performing the beta-supplement daily recording and transmission of science data. The mm447 sequence has executed successfully from 05-167 (06/16/05) and will terminate this evening. The mm448 sequence, successfully uplinked on 05-172 (06/21/05), will begin execution on 05-174 (06/23/05). The mm448 sequence will use a roll/yaw offset of 4 degrees.

Other – Nine Targeting Observations (7 ROTO & 2 CPROTO) were successfully performed this week by the mz484 and mz485 mini-sequences. MGS has successfully completed 1,474 ROTOs to date.

Spacecraft Health:

MGS health is good. All subsystems teams report nominal operations. The solar array elevation offset continues at 40 degrees.

Uplinks:
There were 23 uplinks to the spacecraft during the past week. They included instrument commands (NIPC’s), ephemeredes, mini-sequences (MZ485), and background sequence (MM448). 9,676 command files have been radiated to the spacecraft since launch.

Upcoming Events:
MGS will complete 30,000 total orbits on July 9th.


Wednesday, June 15, 2005 (DOY 05-159/19:00:00 to DOY 05-166/19:00:00 UTC)

Launch / Days since Launch = Nov. 7, 1996 / 3127 days
Start of Mapping / Days since Start of Mapping = April 1, 1999 / 2267 days
Total Mapping Orbits = 28,022
Total Orbits = 29,705 (1,683 Pre-Mapping Orbits)

Recent Events:
Background Sequences – MGS continues nominal Beta-Supplement operations for this period.

The spacecraft is operating nominally in performing the beta-supplement daily recording and transmission of science data. The mm446 sequence has executed successfully from 05-160 (06/09/05) and will terminate this evening. The mm447 sequence, successfully uplinked on 05-164 (06/13/05), will begin execution on 05-167 (06/16/05). The mm447 sequence will be the first to use a new variable roll/yaw offset capability which will modify the vehicle attitude to keep the Earth within the usable HGA gimbal space. mm447 will use an offset of 2 degrees.

Other – Ten Targeting Observations (6 ROTO & 4 CPROTO) were successfully performed this week by the mz482 and mz483 mini-sequences. MGS has successfully completed 1,465 ROTOs to date.

Spacecraft Health:
MGS health is good. All subsystems teams report nominal operations. The solar array elevation offset continues at 40 degrees.

Uplinks:
There were 19 uplinks to the spacecraft during the past week. They included instrument commands (NIPC’s), ephemeredes, mini-sequences (MZ483,MZ484), and background sequence (MM447). 9,653 command files have been radiated to the spacecraft since launch.

Upcoming Events:
The second roll/yaw offset angle (4 deg) will begin execution June 23 with the start of background sequence MM448. MGS will complete 30,000 total orbits on July 9th.


Wednesday, June 8, 2005 (DOY 05-152/19:00:00 to DOY 05-159/19:00:00 UTC)

Launch / Days since Launch = Nov. 7, 1996 / 3120 days
Start of Mapping / Days since Start of Mapping = April 1, 1999 / 2260 days
Total Mapping Orbits = 27,936
Total Orbits = 29,619 (1,683 Pre-Mapping Orbits)

Recent Events:
Background Sequences – MGS continues nominal Beta-Supplement operations for this period.

The spacecraft is operating nominally in performing the beta-supplement daily recording and transmission of science data. The mm445 sequence has executed successfully from 05-153 (06/02/05) and will terminate this evening. The mm445 sequence was the first 1 week sequence ever performed in Beta-Supplement operations. THis change was enabled by several changes in the background sequence process, including changes to MAPGEN, as well as SeqGen blocks. The HGA Beta_supplement Auto-Track patch was also developed and implemented to support this effort. The mm446 sequence, successfully uplinked on 05-157 (06/06/05), will begin execution on 05-160 (06/09/05).

Other – Eight Targeting Observations (2 ROTO & 6 CPROTO) were successfully performed this week by the mz480 and mz481 mini-sequences. MGS has successfully completed 1,455 ROTOs to date. ANother benefit of the HGA Beta_supplement Auto-Track patch is that the entire illuminated side of Mars is again targetable for ROTOs and CPROTOs. Prior to mm445 approximately 48 degrees of latitude on the daylight side was not targetable because of background sequence HGA commanding.

Spacecraft Health:
MGS health is good. All subsystems teams report nominal operations. The solar array elevation offset continues at 40 degrees. As of 05-153 (06/02/05) MGS fuel consumption is 3.3 g/day, with 9.15 kg of usable fuel remaining. At this consumption rate, the usable fuel will support operations into 2013.

Uplinks:
There were 20 uplinks to the spacecraft during the past week. They included instrument commands (NIPC’s), ephemeredes, mini-sequences (MZ481,MZ482), and background sequence (MM446). 9,634 command files have been radiated to the spacecraft since launch.

Upcoming Events:
The first roll/yaw offset angle (2 deg) will begin execution June 16 with the start of background sequence MM447. MGS will complete 30,000 total orbits on July 9th.


Wednesday, June 1, 2005 (DOY 05-145/19:00:00 to DOY 05-152/19:00:00 UTC)

Launch / Days since Launch = Nov. 7, 1996 / 3113 days
Start of Mapping / Days since Start of Mapping = April 1, 1999 / 2253 days
Total Mapping Orbits = 27,851
Total Orbits = 29,534 (1,683 Pre-Mapping Orbits)

Recent Events:
Background Sequences – MGS continues nominal Beta-Supplement operations for this period.

The spacecraft is operating nominally in performing the beta-supplement daily recording and transmission of science data. The mm443 sequence executed successfully from 05-146 (05/26/05) through 05-148(05/28/05). The mm444 sequence has executed successfully since 05-149 (05/29/05) and will terminate this evening. The mm445 sequence, successfully uplinked on 05-152 (06/01/05), will begin execution on 05-153 (06/02/05).

Other – One Targeting Observation (CPROTO) was successfully performed this week by the mz479 mini-sequence. MGS has successfully completed 1,447 ROTOs to date. Eight Radio Science Earth Occultation Egress scans were successfully conducted by the mz478 mini-sequence.

Spacecraft Health:
MGS health is good. All subsystems teams report nominal operations. The solar array elevation offset continues at 40 degrees.

Uplinks:
There were 20 uplinks to the spacecraft during the past week. They included instrument commands (NIPC’s), ephemeredes, mini-sequences (MZ478,MZ479), and background sequences (MM444,MM445). 9,614 command files have been radiated to the spacecraft since launch.

Upcoming Events:
The first 1 week Beta-Supplement background sequence (MM445) will begin execution June 2.


Wednesday, May 25, 2005 (DOY 05-138/19:00:00 to DOY 05-145/19:00:00 UTC)

Launch / Days since Launch = Nov. 7, 1996 / 3106 days
Start of Mapping / Days since Start of Mapping = April 1, 1999 / 2246 days
Total Mapping Orbits = 27,765
Total Orbits = 29,448 (1,683 Pre-Mapping Orbits)

Recent Events:
Background Sequences – MGS continues nominal Beta-Supplement operations for this period.

The spacecraft is operating nominally in performing the beta-supplement daily recording and transmission of science data. The mm441 sequence executed successfully from 05-139 (05/19/05) through 05-141(05/21/05). The mm442 sequence has executed successfully since 05-142 (05/22/05) and will terminate this evening. The mm443 sequence, successfully uplinked on 05-145 (05/25/05), will begin execution on 05-146 (05/26/05).

Other – Seven Targeting Observations (2 ROTOs, 4 CPROTOs, & 1 Focus Calibration) were successfully performed this week by the mz476, and mz477 mini-sequences. MGS has successfully completed 1,446 ROTOs to date. The MOC focus calibration effort has concluded successfully.

Spacecraft Health:
MGS health is good. All subsystems teams report nominal operations. The solar array elevation offset continues at 40 degrees.

Uplinks:
There were 8 uplinks to the spacecraft during the past week. They included instrument commands (NIPC’s), ephemeredes, mini-sequences (MZ477), and background sequences (MM442,MM443). 9,594 command files have been radiated to the spacecraft since launch.

Upcoming Events:
Radio Science Occultation Egress scans are planned for May 26-27. The first 1 week Beta-Supplement background sequence will begin execution June 2.


Wednesday, May 18, 2005 (DOY 05-131/19:00:00 to DOY 05-138/19:00:00 UTC)

Launch / Days since Launch = Nov. 7, 1996 / 3099 days
Start of Mapping / Days since Start of Mapping = April 1, 1999 / 2239 days
Total Mapping Orbits = 27,680
Total Orbits = 29,363 (1,683 Pre-Mapping Orbits)

Recent Events:
Background Sequences – MGS continues nominal Beta-Supplement operations for this period.

The spacecraft is operating nominally in performing the beta-supplement daily recording and transmission of science data. The mm439 sequence executed successfully from 05-132 (05/12/05) through 05-134(05/14/05). The mm440 sequence has executed successfully since 05-135 (05/15/05) and will terminate this evening. The mm441 sequence, successfully uplinked on 05-137 (05/17/05), will begin execution on 05-139 (05/19/05).

Other – Twelve Targeting Observations (8 ROTOs & 4 Focus Calibration Slews) were successfully performed this week by the mz473, mz474, and mz475 mini-sequences. MGS has successfully completed 1,439 ROTOs to date.

Spacecraft Health:
MGS health is good. All subsystems teams report nominal operations. The solar array elevation offset continues at 40 degrees.

Uplinks:
There were 26 uplinks to the spacecraft during the past week. They included instrument commands (NIPC’s), ephemeredes, mini-sequences (MZ473,MZ474,MZ475,MZ476), and background sequences (MM439,MM440,MM441). 9,586 command files have been radiated to the spacecraft since launch.

Upcoming Events:
One MOC focus calibration slew remains to be performed next week. Radio Science Occultation Egress scans are planned for May 26-27.


Wednesday, May 11, 2005 (DOY 05-124/19:00:00 to DOY 05-131/19:00:00 UTC)

Launch / Days since Launch = Nov. 7, 1996 / 3092 days
Start of Mapping / Days since Start of Mapping = April 1, 1999 / 2232 days
Total Mapping Orbits = 27,594
Total Orbits = 29,277 (1,683 Pre-Mapping Orbits)

Recent Events:
Background Sequences – MGS continues nominal Beta-Supplement operations for this period.

The spacecraft is operating nominally in performing the beta-supplement daily recording and transmission of science data. The mm437 sequence executed successfully from 05-125 (05/05/05) through 05-127(05/07/05). The mm438 sequence has executed successfully since 05-128 (05/08/05) and will terminate this evening. The mm439 sequence, successfully uplinked on 05-131 (05/11/05), will begin execution on 05-132 (05/12/05).

Other – Nine Targeting Observations (7 ROTOs & 2 CPROTOs) were successfully performed this week by the mz471, and mz472 mini-sequences. MGS has successfully completed 1,427 ROTOs to date.

Spacecraft Health:
MGS health is good. All subsystems teams report nominal operations. The solar array elevation offset was successfully changed to 40 degrees, and the MOLA heater has been turned off.

Uplinks:
There were 20 uplinks to the spacecraft during the past week. They included instrument commands (NIPC’s), ephemeredes, mini-sequences (MZ471,MZ472), and background sequences (MM438). 9,560 command files have been radiated to the spacecraft since launch.

Upcoming Events:
MOC focus calibration slews will be performed starting May 12. Radio Science Occultation Egress scans are planned for May 26-27.


Wednesday, May 4, 2005 (DOY 05-117/19:00:00 to DOY 05-124/19:00:00 UTC)

Launch / Days since Launch = Nov. 7, 1996 / 3085 days
Start of Mapping / Days since Start of Mapping = April 1, 1999 / 2225 days
Total Mapping Orbits = 27,508
Total Orbits = 29,191 (1,683 Pre-Mapping Orbits)

Recent Events:
Background Sequences – MGS continues nominal Beta-Supplement operations for this period.

The spacecraft is operating nominally in performing the beta-supplement daily recording and transmission of science data. The mm435 sequence executed successfully from 05-118 (04/28/05) through 05-120(04/30/05). The mm436 sequence has executed successfully since 05-121 (05/01/05) and will terminate this evening. The mm437 sequence, successfully uplinked on 05-123 (05/03/05), will begin execution on 05-125 (05/05/05).

Other – Twelve Targeting Observations (9 ROTOs & 3 CPROTOs) were successfully performed this week by the mz469, and mz470 mini-sequences. MGS has successfully completed 1,418 ROTOs to date.

Spacecraft Health:
MGS health is good. All subsystems teams report nominal operations. The solar array elevation offset continues at 35 degrees.

Uplinks:
There were 10 uplinks to the spacecraft during the past week. They included instrument commands (NIPC’s), ephemeredes, mini-sequences (MZ470), and background sequences (MM436, MM437). 9,540 command files have been radiated to the spacecraft since launch.

Upcoming Events:
The solar array auto-track offset will be increased to 40 degrees with the start of background sequence MM437 (05/05/05). MOC focus calibration slews will be performed starting May 12.


Wednesday, April 27, 2005 (DOY 05-110/19:00:00 to DOY 05-117/19:00:00 UTC)

Launch / Days since Launch = Nov. 7, 1996 / 3078 days
Start of Mapping / Days since Start of Mapping = April 1, 1999 / 2218 days
Total Mapping Orbits = 27,423
Total Orbits = 29,106 (1,683 Pre-Mapping Orbits)

Recent Events:
Background Sequences – MGS continues nominal Beta-Supplement operations for this period.

The spacecraft is operating nominally in performing the beta-supplement daily recording and transmission of science data. The mm433 sequence executed successfully from 05-111 (04/21/05) through 05-113(04/23/05). The mm434 sequence has executed successfully since 05-114 (04/24/05) and will terminate this evening. The mm435 sequence, successfully uplinked on 05-116 (04/26/05), will begin execution on 05-118 (04/28/05).

Other – Nine Targeting Observations (6 ROTOs & 3 CPROTOs) were successfully performed this week by the mz467, and mz468 mini-sequences. MGS has successfully completed 1,406 ROTOs to date. The mz467 mini-sequence included modified CPROTO slews to image the Mars Express and Odyssey spacecraft. Both imaging slews were successful.

Spacecraft Health:
MGS health is good. All subsystems teams report nominal operations. The solar array elevation offset continues at 35 degrees.

Uplinks:
There were 20 uplinks to the spacecraft during the past week. They included instrument commands (NIPC’s), ephemeredes, mini-sequences (MZ468,MZ469), and background sequences (MM434, MM435). 9,530 command files have been radiated to the spacecraft since launch.

Upcoming Events:
The solar array auto-track offset will be increased to 40 degrees with the start of background sequence MM439 (05/12/05). MOC focus calibration slews will be performed starting May 12.


Wednesday, April 20, 2005 (DOY 05-103/19:00:00 to DOY 05-110/19:00:00 UTC)

Launch / Days since Launch = Nov. 7, 1996 / 3071 days
Start of Mapping / Days since Start of Mapping = April 1, 1999 / 2211 days
Total Mapping Orbits = 27,337
Total Orbits = 29,020 (1,683 Pre-Mapping Orbits)

Recent Events:
Background Sequences – MGS continues nominal Beta-Supplement operations for this period.

The spacecraft is operating nominally in performing the beta-supplement daily recording and transmission of science data. The mm431 sequence executed successfully from 05-104 (04/14/05) through 05-106(04/16/05). The mm432 sequence has executed successfully since 05-107 (04/17/05) and will terminate this evening. The mm433 sequence, successfully uplinked on 05-109 (04/19/05), will begin execution on 05-111 (04/21/05).

Other – Seven Targeting Observations (6 ROTOs & 1 CPROTOs) were successfully performed this week by the mz465, and mz466 mini-sequences. MGS has successfully completed 1,397 ROTOs to date. The mz465 mini-sequence also performed 6 radio science Earth occultation egress scans.

Spacecraft Health:
MGS health is good. All subsystems teams report nominal operations. The solar array elevation offset continues at 35 degrees.

Uplinks:
There were 15 uplinks to the spacecraft during the past week. They included instrument commands (NIPC’s), ephemeredes, mini-sequences (MZ466,MZ467), and background sequences (MM432, MM433). 9,510 command files have been radiated to the spacecraft since launch.

Upcoming Events:
Imaging of MEX will be attempted on 05-111 (04/21/05). Imaging of Odyssey will be attempted on 05-112 (04/22/05).


Wednesday, April 13, 2005 (DOY 05-096/19:00:00 to DOY 05-103/19:00:00 UTC)

Launch / Days since Launch = Nov. 7, 1996 / 3064 days
Start of Mapping / Days since Start of Mapping = April 1, 1999 / 2204 days
Total Mapping Orbits = 27,251
Total Orbits = 28,934 (1,683 Pre-Mapping Orbits)

Recent Events:
Background Sequences – MGS continues nominal Beta-Supplement operations for this period.

The spacecraft is operating nominally in performing the beta-supplement daily recording and transmission of science data. The mm429 sequence executed successfully from 05-097 (04/07/05) through 05-099(04/09/05). The mm430 sequence has executed successfully since 05-100 (04/10/05) and will terminate this evening. The mm431 sequence, successfully uplinked on 05-102 (04/12/05), will begin execution on 05-104 (04/14/05).

Other – Eleven Targeting Observations (8 ROTOs & 3 CPROTOs) were successfully performed this week by the mz463, and mz464 mini-sequences. MGS has successfully completed 1,390 ROTOs to date.

Spacecraft Health:
MGS health is good. All subsystems teams report nominal operations. The solar array elevation offset continues at 35 degrees.

Uplinks:
There were 15 uplinks to the spacecraft during the past week. They included instrument commands (NIPC’s), ephemeredes, mini-sequences (MZ464,MZ465), and background sequences (MM430, MM431). 9,495 command files have been radiated to the spacecraft since launch.

Upcoming Events:
Six Radio Science Occultation Egress scans are scheduled for 05-104(04/14/05).


Wednesday, April 6, 2005 (DOY 05-089/19:00:00 to DOY 05-096/19:00:00 UTC)

Launch / Days since Launch = Nov. 7, 1996 / 3057 days
Start of Mapping / Days since Start of Mapping = April 1, 1999 / 2197 days
Total Mapping Orbits = 27,166
Total Orbits = 28,849 (1,683 Pre-Mapping Orbits)

Recent Events:
Background Sequences – MGS continues nominal Beta-Supplement operations for this period.

The spacecraft is operating nominally in performing the beta-supplement daily recording and transmission of science data. The mm427 sequence executed successfully from 05-090 (03/31/05) through 05-092(04/02/05). The mm428 sequence has executed successfully since 05-093 (04/03/05) and will terminate this evening. The mm429 sequence, successfully uplinked on 05-095 (04/05/05), will begin execution on 05-097 (04/07/05).

Other – Eleven Targeting Observations (9 ROTOs & 2 CPROTOs) were successfully performed this week by the mz461, and mz462 mini-sequences. MGS has successfully completed 1,379 ROTOs to date.

Spacecraft Health:
MGS health is good. All subsystems teams report nominal operations. The solar array elevation offset continues at 35 degrees. MGS average fuel usage for the last month is 3.37 grams/day.

Uplinks:
There were 22 uplinks to the spacecraft during the past week. They included instrument commands (NIPC’s), ephemeredes, mini-sequences (MZ461,MZ462,MZ463), and background sequences (MM428, MM429). 9,480 command files have been radiated to the spacecraft since launch.

Upcoming Events:
Radio Science Occultation Egress scans are scheduled for 05-104(04/14/05).


 


Wednesday, March 09, 2005 (DOY 05-061/19:00:00 to DOY 05-068/19:00:00 UTC)

Launch / Days since Launch = Nov. 7, 1996 / 3029 days
Start of Mapping / Days since Start of Mapping = April 1, 1999 / 2169 days
Total Mapping Orbits = 26,824
Total Orbits = 28,507 (1,683 Pre-Mapping Orbits)

Recent Events:

Background Sequences - MGS continues nominal Beta-Supplement operations for this period.

The spacecraft is operating nominally in performing the beta-supplement daily recording and transmission of science data. The mm419 sequence executed successfully from 05-062 (03/03/05) through 05-064(03/05/05). The mm420 sequence has executed successfully since 05-065 (03/06/05) and will terminate this evening. The mm421 sequence, successfully uplinked on 05-067 (03/08/05), will begin execution on 05-069 (03/10/05).

Other - Twelve Targeting Observations (8 ROTOs & 4 CPROTOs) were successfully performed this week by the mz453, and mz454 mini-sequences. MGS has successfully completed 1,337 ROTOs to date. MOLA testing completed on 05-068(03/09/05). Although the tests were all successfully executed, the MOLA instrument team was not successful in activating the oscillator for the instrument. MOLA has been returned to its radiometer configuration.

Spacecraft Health:.

MGS health is good. All subsystems teams report nominal operations. The solar arrays remain in Auto-Track with a 20 degree elevation offset. The solar array elevation offset will be changed to 35 degrees on 05-071(03/12/05).

Uplinks:

There were 39 uplinks to the spacecraft during the past week. They included instrument commands (NIPC's), ephemeredes, mini-sequences (MZ454, MZ455), the MOLA test commands, and background sequences (MM420, MM421). 9,412 command files have been radiated to the spacecraft since launch.


Wednesday, February 23, 2005 (DOY 05-047/19:00:00 to DOY 05-054/19:00:00 UTC)

Launch / Days since Launch = Nov. 7, 1996 / 3015 days
Start of Mapping / Days since Start of Mapping = April 1, 1999 / 2155 days
Total Mapping Orbits = 26,652
Total Orbits = 28,335 (1,683 Pre-Mapping Orbits)

Recent Events:

Background Sequences - MGS continues nominal Beta-Supplement operations for this period.

The spacecraft is operating nominally in performing the beta-supplement daily recording and transmission of science data. The mm415 sequence executed successfully from 05-048 (02/17/05) through 05-050 (02/19/05). The mm416 sequence has executed successfully since 05-051 (02/20/05) and will terminate this evening. The mm417 sequence, successfully uplinked on 05-053 (02/22/05), will begin execution on 05-055 (02/24/05).

Other - Ten Targeting Observations (7 ROTOs & 3 CPROTOs) were successfully performed this week by the mz448, and mz449 mini-sequences. MGS has successfully completed 1,320 ROTOs to date.

Spacecraft Health:

MGS health is good. All subsystems teams report nominal operations. The solar arrays remain in Auto-Track with a 10 degree elevation offset. The solar array elevation offset will be changed to 20 degrees late today (02/23/05).

Uplinks:

There were 9 uplinks to the spacecraft during the past week. They included instrument commands (NIPC's), ephemeredes, mini-sequences (MZ449), and background sequences (MM416 and MM417). 9,348 command files have been radiated to the spacecraft since launch.

Upcoming Events:

Radio Science Egress scans are planned for 05-058 (02/27/05). MOLA testing is planned from 05-061(03/02/05) through 05-068 (03/09/05).


Wednesday, February 16, 2005 (DOY 05-040/19:00:00 to DOY 05-047/19:00:00 UTC)

Launch / Days since Launch = Nov. 7, 1996 / 3008 days
Start of Mapping / Days since Start of Mapping = April 1, 1999 / 2148 days
Total Mapping Orbits = 26,567
Total Orbits = 28,250 (1,683 Pre-Mapping Orbits)

Recent Events:

Background Sequences - MGS continues nominal Beta-Supplement operations for this period.

The spacecraft is operating nominally in performing the beta-supplement daily recording and transmission of science data. The mm413 sequence executed successfully from 05-041 (02/10/05) through 05-043 (02/12/05). The mm414 sequence has executed successfully since 05-044 (02/13/05) and will terminate this evening. The mm415 sequence, successfully uplinked on 05-046 (02/15/05), will begin execution on 05-048 (02/17/05).

Other - Ten Targeting Observations (7 ROTOs & 3 CPROTOs) were successfully performed this week by the mz446, and mz447 mini-sequences. MGS has successfully completed 1,310 ROTOs to date.

Spacecraft Health:

MGS health is good. All subsystems teams report nominal operations. The solar arrays remain in Auto-Track. The 35 degree Solar Array Autotrack Offset was uplinked on 05-041. Due to higher than expected momentum buildup in this configuration, the 10 degree offset was restored on 05-042. On 05-046 a new 10 degree offset configuration was established which rotates each panel in a different direction. This will be evaluated for applicability to another attempt at a 35 degree offset. On 05-044 the TES spectrometer was turned on. Evaluation of this data has led to a reduced estimate of remaining life in the spectrometer lamp. Periodic turn-on of the TES spectrometer has been abandoned for the present.

Uplinks:

There were 26 uplinks to the spacecraft during the past week. They included instrument commands (NIPC's), the Solar Array Auto-Track Offsets, ephemeredes, mini-sequences (MZ447,MZ448), and background sequences (MM414 and MM415). 9,339 command files have been radiated to the spacecraft since launch.

Upcoming Events:

Radio Science Egress scans are planned for 05-058 (02/27/05). MOLA testing is planned from 05-061(03/02/05) through 05-068 (03/09/05).


Wednesday, February 9, 2005 (DOY 05-033/19:00:00 to DOY 05-040/19:00:00 UTC)

Launch / Days since Launch = Nov. 7, 1996 / 3001 days
Start of Mapping / Days since Start of Mapping = April 1, 1999 / 2141 days
Total Mapping Orbits = 26,481
Total Orbits = 28,164 (1,683 Pre-Mapping Orbits)

Recent Events:

Background Sequences - MGS continues nominal Beta-Supplement operations for this period.

The spacecraft is operating nominally in performing the beta-supplement daily recording and transmission of science data. The mm411 sequence executed successfully from 05-034 (02/03/05) through 05-036 (02/05/05). The mm412 sequence has executed successfully since 05-037 (02/06/05) and will terminate this evening. The mm413 sequence, successfully uplinked on 05-039 (02/08/05), will begin execution on 05-041 (02/10/05).

Other - Eleven Targeting Observations (8 ROTOs & 3 CPROTOs) were successfully performed this week by the mz444, and mz445 mini-sequences. MGS has successfully completed 1,300 ROTOs to date.

Spacecraft Health:

MGS health is good. All subsystems teams report nominal operations. The solar arrays remain in Auto-Track. A patch to the Flight Sofware has been implemented to allow the Solar Arrays to autotrack with an elevation offset. This patch was uplinked on 05-031 (01/31/05) with a 0 deg offset. On 05-033 (02/02/05) the offset was changed to 10 degrees, and will be increased to 35 degrees later today.

Uplinks:

There were 26 uplinks to the spacecraft during the past week. They included instrument commands (NIPC's), the 10 degree Solar Array Auto-Track Offset, ephemeredes, mini-sequences (MZ445,MZ446), and background sequences (MM412 and MM413). 9,313 command files have been radiated to the spacecraft since launch.

Upcoming Events:

The Solar Array Autotrack elevation offset will be changed to 35 degrees on 05-041 (02/10/05). The next TES spectrometer turn-on is scheduled for 05-044 (02/13/05). Radio Science Egress scans are planned for 05-058 (02/27/05).


Wednesday, February 2, 2005 (DOY 05-026/19:00:00 to DOY 05-033/19:00:00 UTC)

Launch / Days since Launch = Nov. 7, 1996 / 2994 days
Start of Mapping / Days since Start of Mapping = April 1, 1999 / 2134 days
Total Mapping Orbits = 26,395
Total Orbits = 28,078 (1,683 Pre-Mapping Orbits)

Recent Events:

Background Sequences - MGS continues nominal Beta-Supplement operations for this period.

The spacecraft is operating nominally in performing the beta-supplement daily recording and transmission of science data. The mm409 sequence executed successfully from 05-027 (01/27/05) through 05-029 (01/29/05). The mm410 sequence has executed successfully since 05-030 (01/30/05) and will terminate this evening. The mm411 sequence, successfully uplinked on 05-032 (02/01/05), will begin execution on 05-034 (02/03/05). MGS transitioned to medium data rate with the start of the MM409 sequence.

Other - Nine Targeting Observations (7 ROTOs & 2 CPROTOs) were successfully performed this week by the mz442, and mz443 mini-sequences. MGS has successfully completed 1,289 ROTOs to date.

Spacecraft Health:. MGS health is good. All subsystems teams report nominal operations. The solar arrays remain in Auto-Track. A patch to the Flight Sofware has been implemented to allow the Solar Arrays to autotrack with an elevation offset. This patch was uplinked on 05-031 (01/31/05) with a 0 deg offset. This will allow the spacecraft to manage excess power while in Autotrack.

Uplinks:

There were 12 uplinks to the spacecraft during the past week. They included instrument commands (NIPC's), the Flight Software Solar Array Autotrack patch, ephemeredes, mini-sequences (MZ443,MZ444), and background sequences (MM410 and MM411). 9,287 command files have been radiated to the spacecraft since launch.

Upcoming Events:

The Solar Array Autotrack elevation offset will be changed to 10 degrees on 05-034 (02/03/05), and then to 35 degrees on 05-041 (02/10/05). The next TES spectrometer turn-on is scheduled for 05-044 (02/13/05).


Wednesday, January 26, 2005 (DOY 05-019/19:00:00 to DOY 05-026/19:00:00 UTC)

Launch / Days since Launch = Nov. 7, 1996 / 2987 days
Start of Mapping / Days since Start of Mapping = April 1, 1999 / 2127 days
Total Mapping Orbits = 26,310
Total Orbits = 27,993 (1,683 Pre-Mapping Orbits)

Recent Events:

Background Sequences - MGS continues nominal Beta-Supplement operations for this period.

The spacecraft is operating nominally in performing the beta-supplement daily recording and transmission of science data. The mm407 sequence executed successfully from 05-020 (01/20/05) through 05-022 (01/22/05). The mm408 sequence has executed successfully since 05-023 (01/23/05) and will terminate this evening. The mm409 sequence, successfully uplinked on 05-025 (01/25/05), will begin execution on 05-027 (01/27/05).

Other - Ten Targeting Observations (8 ROTOs & 2 CPROTOs) were successfully performed this week by the mz440, and mz441 mini-sequences. MGS has successfully completed 1,280 ROTOs to date.

Spacecraft Health:. MGS health is good. All subsystems teams report nominal operations. The solar arrays remain in Auto-Track while flight software, script, and sequence tool modifications are being made to prevent HGA shadowing of SSA Head 4 (on the SAM panel) from resulting in another Cmode entry.

Uplinks:

There were 27 uplinks to the spacecraft during the past week. They included instrument commands (NIPC's), ephemeredes, mini-sequences (MZ440,MZ441,MZ442), and background sequences (MM408 and MM409). 9,275 command files have been radiated to the spacecraft since launch.

Upcoming Events:

MGS will transition from low to medium data rate with the start of the MM409 background sequence on 05-027 (01/27/05). The flight software patch to allow autotrack with an elevation offset will be uplinked to the spacecraft on 05-031. This will be the last of several modifications made to mitigate the HGA shadowing of the SAM sun sensor.


Wednesday, January 19, 2005 (DOY 05-012/19:00:00 to DOY 05-019/19:00:00 UTC)

Launch / Days since Launch = Nov. 7, 1996 / 2980 days
Start of Mapping / Days since Start of Mapping = April 1, 1999 / 2120 days
Total Mapping Orbits = 26,224
Total Orbits = 27,907 (1,683 Pre-Mapping Orbits)

Recent Events:

Background Sequences - MGS continues nominal Beta-Supplement operations for this period.

The spacecraft is operating nominally in performing the beta-supplement daily recording and transmission of science data. The mm405 sequence executed successfully from 05-013 (01/13/05) through 05-015 (01/15/05). The mm406 sequence has executed successfully since 05-016 (01/16/05) and will terminate this evening. The mm407 sequence, successfully uplinked on 05-018 (01/18/05), will begin execution on 05-020 (01/20/05).

Other - Twelve Targeting Observations (10 ROTOs & 2 CPROTOs) were successfully performed this week by the mz438, and mz439 mini-sequences. MGS has successfully completed 1,270 ROTOs to date.

Spacecraft Health:. MGS health is good. All subsystems teams report nominal operations. The solar arrays remain in Auto-Track while flight software, script, and sequence tool modifications are being made to prevent HGA shadowing of SSA Head 4 (on the SAM panel) from resulting in another Cmode entry.

Uplinks:

There were 7 uplinks to the spacecraft during the past week. They included instrument commands (NIPC's), ephemeredes, mini-sequences (MZ439), and background sequences (MM406 and MM407). 9,248 command files have been radiated to the spacecraft since launch.

Upcoming Events:

MGS will transition from low to medium data rate with the start of the MM409 background sequence on 05-027 (01/27/05).


Wednesday, January 12, 2005 (DOY 05-005/19:00:00 to DOY 05-012/19:00:00 UTC)

Launch / Days since Launch = Nov. 7, 1996 / 2973 days
Start of Mapping / Days since Start of Mapping = April 1, 1999 / 2113 days
Total Mapping Orbits = 26,139
Total Orbits = 27,822 (1,683 Pre-Mapping Orbits)

Recent Events:

Background Sequences - MGS continues nominal Beta-Supplement operations for this period.

The spacecraft is operating nominally in performing the beta-supplement daily recording and transmission of science data. The mm403 sequence executed successfully from 05-006 (01/06/05) through 05-008 (01/08/05). The mm404 sequence has executed successfully since 05-009 (01/09/05) and will terminate this evening. The mm405 sequence, successfully uplinked on 05-011 (01/11/05), will begin execution on 05-013 (01/13/05).

Other - Thirteen Targeting Observations (11 ROTOs & 2 CPROTOs) were successfully performed this week by the mz436, and mz437 mini-sequences. MGS has successfully completed 1,263 ROTOs to date.

Spacecraft Health:

MGS health is good. All subsystems teams report nominal operations. The TES team was successful in powering on the spectrometer lamp. TES will resume one day per month observations with the spectrometer. The solar arrays remain in Auto-Track while flight software, script, and sequence tool modifications are being made to prevent HGA shadowing of SSA Head 4 (on the SAM panel) from resulting in another Cmode entry.

Uplinks:

There were 25 uplinks to the spacecraft during the past week. They included instrument commands (NIPC's), ephemeredes, mini-sequences (MZ437 and mz438), and background sequences (MM404 and MM405). 9,241 command files have been radiated to the spacecraft since launch.

Upcoming Events:

MGS will transition from low to medium data rate with the start of the MM409 background sequence on 05-027 (01/27/05).


Wednesday, January 5, 2005 (DOY 04-364/19:00:00 to DOY 05-005/19:00:00 UTC)

Launch / Days since Launch = Nov. 7, 1996 / 2967 days
Start of Mapping / Days since Start of Mapping = April 1, 1999 / 2106 days
Total Mapping Orbits = 26,053
Total Orbits = 27,736 (1,683 Pre-Mapping Orbits)

Recent Events:

Background Sequences - MGS continues nominal Beta-Supplement operations for this period.

The spacecraft is operating nominally in performing the beta-supplement daily recording and transmission of science data. The mm401 sequence executed successfully from 04-365 (12/30/04) through 05-001 (01/01/05). The mm402 sequence has executed successfully since 05-002 (01/02/05) and will terminate this evening. The mm403 sequence, successfully uplinked on 05-004 (01/04/05), will begin execution on 05-006 (01/06/05).

Other - No Targeting Observations were performed this week.

Spacecraft Health:

MGS health is good. All subsystems teams report nominal operations. The TES team is investigating an anomaly with the lamp which occurred during the TES power on.

Uplinks:

There were 9 uplinks to the spacecraft during the past week. They included C-Mode recovery commands, ephemeredes, mini-sequence MZ436, and background sequences MM402 and MM403. 9,216 command files have been radiated to the spacecraft since launch.

Upcoming Events:

Targeting observations will resume in the coming week with the execution of the MZ436 mini-sequence.


Wednesday, December 15, 2004 (DOY 04-343/19:00:00 to DOY 04-350/19:00:00 UTC)

Launch / Days since Launch = Nov. 7, 1996 / 2960 days
Start of Mapping / Days since Start of Mapping = April 1, 1999 / 2085 days
Total Mapping Orbits = 25,796
Total Orbits = 27,479 (1,683 Pre-Mapping Orbits)

Recent Events:

Background Sequences - MGS continues nominal Beta-Supplement operations for this period.

The spacecraft is operating nominally in performing the beta-supplement daily recording and transmission of science data. The mm395 sequence executed successfully from 04-344 (12/09/04) through 04-346 (12/11/04). The mm396 sequence has executed successfully since 04-347 (12/12/04) and will terminate this evening. The mm397 sequence, successfully uplinked on 04-348 (12/13/04), will begin execution on 04-351 (12/16/04).

Other - Seven Targeting Observations (6 ROTOs & 1 CPROTOs) were successfully performed this week by the mz429, mz430, and mz431 mini-sequences. MGS has successfully completed 1,235 ROTOs to date. 10 Radio Science Occultation Egress scans were also conducted within the mz430 mini-sequence.

Spacecraft Health:

Spacecraft subsystems report nominal health and performance.

Uplinks:

There were 22 uplinks to the spacecraft during the past week. They included new star catalog and ephemeris files, nominal instrument command loads, mz429, mz430, mz431,and mz432 ROTO mini-sequences, and the mm396 and mm397 background sequences. Also uplinked this week were eclipse egress scripts to provide solar array control in 3 parts with a 25 degree offset. 9,096 command files have been radiated to the spacecraft since launch.

Upcoming Events:

The 3-part 25 degree offset control of the solar arrays will begin with MM397 this evening. These script changes are performed periodically to manage excess power.


Wednesday, December 8, 2004 (DOY 04-336/19:00:00 to DOY 04-343/19:00:00 UTC)

Launch / Days since Launch = Nov. 7, 1996 / 2953 days
Start of Mapping / Days since Start of Mapping = April 1, 1999 / 2078 days
Total Mapping Orbits = 25,711
Total Orbits = 27,394 (1,683 Pre-Mapping Orbits)

Recent Events:

Background Sequences - MGS continues nominal Beta-Supplement operations for this period.

The spacecraft is operating nominally in performing the beta-supplement daily recording and transmission of science data. The mm393 sequence executed successfully from 04-337 (12/02/04) through 04-339 (12/04/04). The mm394 sequence has executed successfully since 04-340 (12/05/04) and will terminate this evening. The mm395 sequence, successfully uplinked on 04-342 (12/07/04), will begin execution on 04-344 (12/09/04).

Other - Thirteen Targeting Observations (12 ROTOs & 1 CPROTOs) were successfully performed this week by the mz427 and mz428 mini-sequences. MGS has successfully completed 1,228 ROTOs to date.

TES successfully conducted observations from 04-338 into 04-339. The lamp performance was as expected, and consistent with last month's measurements. These observations were conducted in coordination with MER.

Spacecraft Health: Spacecraft subsystems report nominal health and performance.

Uplinks:

There were 10 uplinks to the spacecraft during the past week. They included new star catalog and ephemeris files, nominal instrument command loads, mz428 ROTO mini-sequences, and the mm394 and mm395 background sequences. 9,074 command files have been radiated to the spacecraft since launch.

Upcoming Events:

Radio Science Egress Scans are scheduled for next week.


Wednesday, December 8, 2004 (DOY 04-336/19:00:00 to DOY 04-343/19:00:00 UTC)

Launch / Days since Launch = Nov. 7, 1996 / 2953 days
Start of Mapping / Days since Start of Mapping = April 1, 1999 / 2078 days
Total Mapping Orbits = 25,711
Total Orbits = 27,394 (1,683 Pre-Mapping Orbits)

Recent Events:

Background Sequences - MGS continues nominal Beta-Supplement operations for this period.

The spacecraft is operating nominally in performing the beta-supplement daily recording and transmission of science data. The mm393 sequence executed successfully from 04-337 (12/02/04) through 04-339 (12/04/04). The mm394 sequence has executed successfully since 04-340 (12/05/04) and will terminate this evening. The mm395 sequence, successfully uplinked on 04-342 (12/07/04), will begin execution on 04-344 (12/09/04).

Other - Thirteen Targeting Observations (12 ROTOs & 1 CPROTOs) were successfully performed this week by the mz427 and mz428 mini-sequences. MGS has successfully completed 1,228 ROTOs to date.

TES successfully conducted observations from 04-338 into 04-339. The lamp performance was as expected, and consistent with last month's measurements. These observations were conducted in coordination with MER.

Spacecraft Health:

Spacecraft subsystems report nominal health and performance.

Uplinks:

There were 10 uplinks to the spacecraft during the past week. They included new star catalog and ephemeris files, nominal instrument command loads, mz428 ROTO mini-sequences, and the mm394 and mm395 background sequences. 9,074 command files have been radiated to the spacecraft since launch.

Upcoming Events:

Radio Science Egress Scans are scheduled for next week.


Wednesday, December 1, 2004 (DOY 04-329/19:00:00 to DOY 04-336/19:00:00 UTC)

Launch / Days since Launch = Nov. 7, 1996 / 2940 days
Start of Mapping / Days since Start of Mapping = April 1, 1999 / 2064 days
Total Mapping Orbits = 25,625
Total Orbits = 27,308 (1,683 Pre-Mapping Orbits)

Recent Events:

Background Sequences - MGS continues nominal Beta-Supplement operations for this period.

The spacecraft is operating nominally in performing the beta-supplement daily recording and transmission of science data. The mm391 sequence executed successfully from 04-329 (11/24/04) through 04-332 (11/27/04). The mm392 sequence has executed successfully since 04-333 (11/28/04) and will terminate this evening. The mm393 sequence, successfully uplinked on 04-335 (11/30/04), will begin execution on 04-337 (12/02/04).

Other - Twelve Targeting Observations (9 ROTOs & 3 CPROTOs) were successfully performed this week by the mz425 and mz426 mini-sequences. MGS has successfully completed 1,215 ROTOs to date. 10 of 39 observations (~25%) over the last 3 weeks would previously have been unobtainable. This expansion in observation capability is a benefit of the new targeting block which MGS has recently made operational.

Spacecraft Health:

Spacecraft subsystems report nominal health and performance.

Uplinks:

There were 15 uplinks to the spacecraft during the past week. They included new star catalog and ephemeris files, nominal instrument command loads, mz426 and mz427 ROTO mini-sequences, and the mm392 and mm393 background sequences. 9,064 command files have been radiated to the spacecraft since launch.

Upcoming Events:

Radio Science Egress Scans are scheduled for December. Also scheduled are simultaneous observations between TES and MER.


Wednesday, November 24, 2004 (DOY 04-322/19:00:00 to DOY 04-329/19:00:00 UTC)

Launch / Days since Launch = Nov. 7, 1996 / 2933 days
Start of Mapping / Days since Start of Mapping = April 1, 1999 / 2057 days
Total Mapping Orbits = 25,539
Total Orbits = 27,222 (1,683 Pre-Mapping Orbits)

Recent Events:

Background Sequences - MGS continues nominal Beta-Supplement operations for this period.

The spacecraft is operating nominally in performing the beta-supplement daily recording and transmission of science data. The mm389 sequence executed successfully from 04-323 (11/18/04) through 04-325 (11/20/04). The mm390 sequence executed successfully from 04-326 (11/21/04) through 04-328 (11/23/04). The mm391 sequence, successfully uplinked on 04-327 (11/22/04), has begun execution.

Other - Fourteen Targeting Observations (12 ROTOs & 2 CPROTOs) were successfully performed this week by the mz423 and mz424 mini-sequences. MGS has successfully completed 1,203 ROTOs to date. All Observations performed this week were generated with the new Targeting Block, and all executed nominally.

Spacecraft Health:

Spacecraft subsystems report nominal health and performance.

Uplinks:

There were 23 uplinks to the spacecraft during the past week. They included new star catalog and ephemeris files, nominal instrument command loads, mz423, mz424, and mz425 ROTO mini-sequences, and the mm390 and mm391 background sequences. 9,049 command files have been radiated to the spacecraft since launch.

Upcoming Events:

Radio Science Egress Scans are scheduled for December. Also scheduled are simultaneous observations between TES and MER.


Wednesday, November 17, 2004 (DOY 04-315/19:00:00 to DOY 04-322/19:00:00 UTC)

Launch / Days since Launch = Nov. 7, 1996 / 2926 days
Start of Mapping / Days since Start of Mapping = April 1, 1999 / 2050 days
Total Mapping Orbits = 25,454
Total Orbits = 27,137 (1,683 Pre-Mapping Orbits)

Recent Events:

Background Sequences - MGS continues nominal Beta-Supplement operations for this period.

The spacecraft is operating nominally in performing the beta-supplement daily recording and transmission of science data. The mm387 sequence executed successfully from 04-316 (11/11/04) through 04-318 (11/13/04). The mm388 sequence has performed nominally since it started on 04-319 (11/14/04) and will terminate this evening. The mm389 sequence, successfully uplinked on 04-321 (11/16/04), will then begin execution.

Other - Thirteen Targeting Observations (12 ROTOs & 1 CPROTOs) were successfully performed this week by the mz421 and mz422 mini-sequences. MGS has successfully completed 1,189 ROTOs to date. All Observations performed this week were generated with the new Targeting Block, and all executed nominally.

Spacecraft Health:

Spacecraft subsystems report nominal health and performance.

Uplinks:

There were 17 uplinks to the spacecraft during the past week. They included new star catalog and ephemeris files, nominal instrument command loads, mz422 and mz423 ROTO mini-sequences, and the mm388 and mm389 background sequences. 9,027 command files have been radiated to the spacecraft since launch.

Upcoming Events:

Continuing use of the new CPROTO/ROTO Automated Targeting Block for Comm observations will occur this week. Prior to the new targeting block Comm observations during Beta-Supplement were precluded.


Wednesday, November 10, 2004 (DOY 04-308/19:00:00 to DOY 04-315/19:00:00 UTC)

Launch / Days since Launch = Nov. 7, 1996 / 2919 days
Start of Mapping / Days since Start of Mapping = April 1, 1999 / 2043 days
Total Mapping Orbits = 25,369
Total Orbits = 27,052 (1,683 Pre-Mapping Orbits)

Recent Events:

Background Sequences - MGS continues nominal Beta-Supplement operations for this period.

The spacecraft is operating nominally in performing the beta-supplement daily recording and transmission of science data. The mm385 sequence executed successfully from 04-309 (11/04/04) through 04-311 (11/06/04). The mm386 sequence has performed nominally since it started on 04-312 (11/07/04) and will terminate this evening. The mm387 sequence, successfully uplinked on 04-314 (11/09/04), will then begin execution.

Other - Seven Targeting Observations (5 ROTOs & 2 CPROTOs) were successfully performed this week by the mz419 and mz420 mini-sequences. MGS has successfully completed 1,176 ROTOs to date. All Observations performed this week were generated with the new Targeting Block, and all executed nominally.

Spacecraft Health:

Spacecraft subsystems report nominal health and performance.

Uplinks:

There were 18 uplinks to the spacecraft during the past week. They included new star catalog and ephemeris files, nominal instrument command loads, mz419, mz420, and mz421 ROTO mini-sequences, and the mm386 and mm387 background sequences. 9,010 command files have been radiated to the spacecraft since launch.

Upcoming Events:

First use of the new CPROTO/ROTO Automated Targeting Block for Comm observations will occur this week. Prior to the new targeting block Comm observations during Beta-Supplement were precluded.


Wednesday, November 3, 2004 (DOY 04-301/19:00:00 to DOY 04-308/19:00:00 UTC)

Launch / Days since Launch = Nov. 7, 1996 / 2912 days
Start of Mapping / Days since Start of Mapping = April 1, 1999 / 2036 days
Total Mapping Orbits = 25,295
Total Orbits = 26,978 (1,683 Pre-Mapping Orbits)

Recent Events:

Background Sequences - MGS continues nominal Beta-Supplement operations for this period.

The spacecraft is operating nominally in performing the beta-supplement daily recording and transmission of science data. The mm383 sequence executed successfully from 04-302 (10/28/04) through 04-304 (10/30/04). The mm384 sequence has performed nominally since it started on 04-305 (10/31/04) and will terminate this evening. The mm385 sequence, successfully uplinked on 04-306 (11/01/04), will then begin execution.

Other - Nine Targeting Observations (7 ROTOs & 2 CPROTOs) were successfully performed this week by the mz417 and mz418 mini-sequences. MGS has successfully completed 1,169 ROTOs to date.

Spacecraft Health:

Spacecraft subsystems report nominal health and performance.

Uplinks:

There were 8 uplinks to the spacecraft during the past week. They included new star catalog and ephemeris files, nominal instrument command loads, mz418 ROTO mini-sequence, and the mm384 and mm385 background sequences. 8,992 command files have been radiated to the spacecraft since launch.

Upcoming Events:

First use of the new CPROTO/ROTO Automated Targeting Block will occur this evening.


Wednesday, October 27, 2004 (DOY 04-294/19:00:00 to DOY 04-301/19:00:00 UTC)

Launch / Days since Launch = Nov. 7, 1996 / 2905 days
Start of Mapping / Days since Start of Mapping = April 1, 1999 / 2029 days
Total Mapping Orbits = 25,197
Total Orbits = 26,880 (1,683 Pre-Mapping Orbits)

Recent Events:

Background Sequences - MGS continues nominal Beta-Supplement operations for this period.

The spacecraft is operating nominally in performing the beta-supplement daily recording and transmission of science data. The mm381 sequence executed successfully from 04-295 (10/21/04) through 04-297 (10/23/04). The mm382 sequence has performed nominally since it started on 04-298 (10/24/04) and will terminate this evening. The mm383 sequence, successfully uplinked on 04-293 (10/19/04), will then begin execution.

Other - Five Radio Science Occultation Egress Scans were successfully performed this week by the mz415 mini-sequence. Four Targeting Observations (3 ROTOs & 1 CPROTO) were successfully performed this week by the mz416 mini-sequence. MGS has successfully completed 1,160 ROTOs to date.

Spacecraft Health:

Spacecraft subsystems report nominal health and performance.

Uplinks:

There were 22 uplinks to the spacecraft during the past week. They included new star catalog and ephemeris files, nominal instrument command loads, the mz415 Radio Science, the mz416 and mz417 ROTO mini-sequences, and the mm382 and mm383 background sequences. 8,984 command files have been radiated to the spacecraft since launch.

Upcoming Events:

First use of the new CPROTO/ROTO Automated Targeting Block will be next week.


Wednesday, October 20, 2004 (DOY 04-287/19:00:00 to DOY 04-294/19:00:00 UTC)

Launch / Days since Launch = Nov. 7, 1996 / 2898 days
Start of Mapping / Days since Start of Mapping = April 1, 1999 / 2022 days
Total Mapping Orbits = 25,111
Total Orbits = 26,794 (1,683 Pre-Mapping Orbits)

Recent Events:

Background Sequences - MGS continues nominal Beta-Supplement operations for this period.

The spacecraft is operating nominally in performing the beta-supplement daily recording and transmission of science data. The mm379 sequence executed successfully from 04-288 (10/14/04) through 04-290 (10/16/04). The mm380 sequence has performed nominally since it started on 04-291 (10/17/04) and will terminate this evening. The mm381 sequence, successfully uplinked on 04-293 (10/19/04), will then begin execution.

Other - Twelve Targeting Observations (10 ROTOs & 2 CPROTOs) were successfully performed this week by the mz413 and mz414 mini-sequences. MGS has successfully completed 1,156 ROTOs to date.

Spacecraft Health:

Spacecraft subsystems report nominal health and performance.

Uplinks:

There were 13 uplinks to the spacecraft during the past week. They included new star catalog and ephemeris files, nominal instrument command loads, the mz413 ROTO mini-sequence, and the mm380 and mm381 background sequences. 8,962 command files have been radiated to the spacecraft since launch.

Upcoming Events:

Five Radio Science Egress scans will be conducted on 04-295 (10/21/04).


Wednesday, September 1, 2004 (DOY 04-238/19:00:00 to DOY 04-245/19:00:00 UTC)

Launch / Days since Launch = Nov. 7, 1996 / 2849 days
Start of Mapping / Days since Start of Mapping = April 1, 1999 / 1973 days
Total Mapping Orbits = 24,513
Total Orbits = 26,196

Recent Events:

Background Sequences - MGS continues Beta-Supplement operations through this period.

The spacecraft is operating nominally in performing the beta-supplement daily recording and transmission of science data. The mm368 sequence executed successfully from 04-239 (8/26/04) through 04-241 (8/28/04). The mm369 sequence has performed well since it started on 04-242 (8/29/04) and will terminate this evening. The mm370 sequence, successfully uplinked on 04-244 (8/31/04), will then begin execution. The mm370 and 371 sequences executing this coming week will be the last nominal Beta Supplement sequences before the spacecraft enters solar conjunction.

Other - Nine Targeting Observations (8 ROTOs & 1 CPROTO) were successfully performed this week by the mz406 and mz407 mini-sequences. MGS has successfully completed 1,124 ROTOs to date.

Spacecraft Health:

Spacecraft subsystems report nominal health and performance. The TES lamp has switched from low gain to high gain mode. This would be the last possible setting for the instrument. The TES instrument team is in the process of determining the cause of the gain switch and its impact on the instrument operation, if any.

Uplinks:

There were 15 uplinks to the spacecraft during the past week. They included new star catalog and ephemeris files, nominal instrument command loads, the mz407 ROTO mini-sequence, and the mm369 and mm370 background sequences. 8,862 command files have been radiated to the spacecraft since launch.

Upcoming Events:

The Solar Conjunction background sequence will start next Thursday. MGS will resume Beta Supplement operations on Sunday September 26th.

A special TES calibration test has been built for the mz408 mini-sequence to execute in the coming week. This mini-sequence will be the last targeting sequence before conjunction.


Wednesday, August 18, 2004 (DOY 04-217/19:00:00 to DOY 04-224/19:00:00 UTC)

Launch / Days since Launch = Nov. 7, 1996 / 2828 days
Start of Mapping / Days since Start of Mapping = April 1, 1999 / 1953 days
Total Mapping Orbits = 24,341
Total Orbits = 26,024

Recent Events:

Background Sequences - MGS continues Beta-Supplement operations through this period.

The spacecraft is operating nominally in performing the beta-supplement daily recording and transmission of science data. The mm364 sequence executed successfully from 04-225 (8/125/04) through 04-227 (8/14/04). The mm365 sequence has performed well since it started on 04-228 (8/15/04). It terminates this evening. The mm366 sequence, successfully uplinked on 04-230 (8/17/04), begins executing near the end of day on 04-231 (8/18/04).

Other - Eleven Targeting Observations (ROTOs & CPROTOs) were successfully performed this week by the mz402 and mz403 mini-sequences. MGS has successfully completed 1,107 ROTOs to date.

Spacecraft Health:

Spacecraft subsystems report nominal health and performance.

Uplinks:

There were 12 uplinks to the spacecraft during the past week. They included new star catalog and ephemeris files, nominal instrument command loads, the mz402 and mz403 ROTO mini-sequences, and the mm365 and mm366 background sequences. 8,833 command files have been radiated to the spacecraft since launch.

Upcoming Events:

ROTOs are planned for the mz404 and mz405 mini-sequences.

Planning for Solar Conjunction is underway. A TES calibration test is being planed for 04-246 (9/2/04) prior to solar conjunction.


Wednesday, July 28, 2004 (DOY 04-203/19:00:00 to DOY 04-210/19:00:00 UTC)

Launch / Days since Launch = Nov. 7, 1996 / 2814 days
Start of Mapping / Days since Start of Mapping = April 1, 1999 / 1939 days
Total Mapping Orbits = 24,084
Total Orbits = 25,767

Recent Events:

Background Sequences - MGS successfully transitioned to the Beta-Supplement operating mode on 04-204 (7/22/04). MGS enters this mode whenever the Earth Beta Angle decreases to less than 43 degrees in order to avoid the HGA obstruction discovered in April 1999.

The spacecraft is operating nominally in performing the beta-supplement daily recording and transmission of science data. The mm358 sequence executed successfully from 04-204 (7/22/04) through 04-206 (7/24/04). The mm359 sequence has performed well since it started on 04-207 (7/25/04). It terminates on 04-210 (7/28/04). The mm360 sequence, successfully uplinked on 04-209 (7/27/04), begins executing near the end of day on 04-210 (7/28/04).

Other - Seven Roll Only Targeted Observations (ROTOs) were successfully performed this week by the mz397 mini-sequence. MGS has successfully completing 1,080 ROTOs to date.

MGS completed its relay support for Spirit and Opportunity when it entered beta-supplement operations. It was successful in relaying 10% of the total Spirit rover data and 11% of the total Opportunity rover data as of 7/27/04. MGS and Odyssey together have relayed 95% of both Spirit's and Opportunity's cumulative data volume. Odyssey will continue its relay support.

Spacecraft Health:

Spacecraft subsystems report nominal health and performance.

Uplinks:

There were 15 uplinks to the spacecraft during the past week. They included new star catalog and ephemeris files, nominal instrument command loads, the mz397 & mz398 ROTO mini-sequences, and the mm359 & mm360 background sequences. 8,785 command files have been radiated to the spacecraft since launch.

Upcoming Events:

ROTOs are planned for the mz398 and mz399 mini-sequences.


Wednesday, July 21, 2004 (DOY 04-196/19:00:00 to DOY 04-203/19:00:00 UTC)

Launch / Days since Launch = Nov. 7, 1996 / 2807 days
Start of Mapping / Days since Start of Mapping = April 1, 1999 / 1932 days
Total Mapping Orbits = 23,998
Total Orbits = 25,681

Recent Events:

Background Sequences - The spacecraft is operating nominally in performing the daily recording and transmission of MGS science and engineering data. It is also operating nominally in the collection and transmission of Mars Exploration Rover data. The mm357 sequence has performed well since it started on 04-196 (7/14/04). It terminates near the end of day on 04-203 (7/21/04). The mm358 sequence, successfully uplinked on 04-202 (7/20/04), begins executing near the end of day on 04-203 (7/21/04).

Other - Two Roll Only Targeted Observations (ROTOs) were successfully performed this week by the mz396 mini-sequence. MGS has successfully completing 1,073 ROTOs to date.

MGS continues to relay data from Spirit and Opportunity when requested by the MER project. MGS has successfully relayed 10% of the total Spirit rover data and 12% of the total Opportunity rover data as of 7/21/04. MGS and Odyssey together have relayed 94% of Spirit's and 95% of Opportunity's cumulative data volume.

Spacecraft Health:

Spacecraft subsystems report nominal health and performance.

Uplinks:

There were 17 uplinks to the spacecraft during the past week. They included new star catalog and ephemeris files, nominal instrument command loads, a command to change HGA positioning for spacecraft momentum management, the mz396 ROTO mini-sequence, and the mm358 background sequence. 8,770 command files have been radiated to the spacecraft since launch.

Upcoming Events:

MGS will finish its UHF relay support for both rovers tonight (local) at the beginning of the UTC day 04-204 (7/22/04) when it enters the Beta-Supplement mode of operations. MGS enters this mode of operation whenever the Earth Beta Angle decreases to less than 43 degrees in order to avoid the HGA obstruction discovered in April 1999. The MER project does not require MGS support after it enters Beta-Supplement operations.

ROTOs are planned for the mz397 and mz398 mini-sequences.


Wednesday, July 14, 2004 (DOY 04-189/19:00:00 to DOY 04-196/19:00:00 UTC)

Launch / Days since Launch = Nov. 7, 1996 / 2800 days
Start of Mapping / Days since Start of Mapping = April 1, 1999 / 1925 days
Total Mapping Orbits = 23,913
Total Orbits = 25,596

Recent Events:

Background Sequences - The spacecraft is operating nominally in performing the daily recording and transmission of MGS science and engineering data. It is also operating nominally in the collection and transmission of Mars Exploration Rover data. The mm356 sequence has performed well since it started on 04-189 (7/07/04). It terminates near the end of day on 04-196 (7/14/04). The mm357 sequence, successfully uplinked on 04-195 (7/13/04), begins executing near the end of day on 04-196 (7/14/04).

Other - Eight Roll Only Targeted Observations (ROTOs) were successfully performed this week by the mz394 and mz395 mini-sequences. MGS has successfully completing 1,071 ROTOs to date.

MGS continues to relay data from Spirit and Opportunity when requested by the MER project. MGS has successfully relayed 10% of the total Spirit rover data and 12% of the total Opportunity rover data as of 7/14/04. MGS and Odyssey together have relayed 94% of Spirit's and 95% of Opportunity's cumulative data volume.

Spacecraft Health:

Spacecraft subsystems report nominal health and performance. We were successful in recovering the secondary processor, SCP-2, from C-mode on 04-189 (7/07/04).

Uplinks:

There were 14 uplinks to the spacecraft during the past week. They included new star catalog and ephemeris files, nominal instrument command loads, the mz394 & mz395 ROTO mini-sequences, and the mm357 background sequence. 8,753 command files have been radiated to the spacecraft since launch.

Upcoming Events:

MGS will continue its UHF relay support for both rovers until 04-204 (7/22/04) when it enters the Beta-Supplement mode of operations. MGS enters this mode of operation whenever the Earth Beta Angle decreases to less than 43 degrees in order to avoid the HGA obstruction discovered in April 1999. The MER project does not require MGS support after it enters Beta-Supplement operations.

ROTOs are planned for the mz396 and mz397 mini-sequences.


Wednesday, July 7, 2004 (DOY 04-182/19:00:00 to DOY 04-189/19:00:00 UTC)

Launch / Days since Launch = Nov. 7, 1996 / 2793 days
Start of Mapping / Days since Start of Mapping = April 1, 1999 / 1918 days
Total Mapping Orbits = 23,827
Total Orbits = 25,510

Recent Events:

Background Sequences - The spacecraft is operating nominally in performing the daily recording and transmission of MGS science and engineering data. It is also operating nominally in the collection and transmission of Mars Exploration Rover data. The mm355 sequence has performed well since it started on 04-182 (6/30/04). It terminates near the end of day on 04-189 (7/07/04). The mm356 sequence, successfully uplinked on 04-188 (7/06/04), begins executing near the end of day on 04-189 (7/07/04).

Other - Seven Roll Only Targeted Observations (ROTOs) were successfully performed this week by the mz392 and mz393 mini-sequences. MGS has successfully completing 1,063 ROTOs to date.

MGS continues to relay data from Spirit and Opportunity when requested by the MER program. MGS has successfully relayed 10% of the total Spirit rover data and 12% of the total Opportunity rover data as of 7/07/04. MGS and Odyssey together have relayed 93% of Spirit's and 95% of Opportunity's cumulative data volume.

Spacecraft Health:

Spacecraft subsystems report nominal health and performance on the primary processor, SCP-1. Commands were sent near the end of this reporting period to recover SCP-2 from C-mode. Though we are confident in our implementation, we will have to wait for data playbacks over the next two days to assess how successful we were in the recovery.

Uplinks:

There were 16 uplinks to the spacecraft during the past week. They included new star catalog and ephemeris files, nominal instrument command loads, a command to change HGA positioning for spacecraft momentum management, SCP-2 C-mode recovery files, the mz392 & mz393 ROTO mini-sequences, and the mm356 background sequence. 8,739 command files have been radiated to the spacecraft since launch.

Upcoming Events:

MGS will continue its UHF relay support for both rovers. ROTOs are planned for the mz394 and mz395 mini-sequences.

On 04-204 (7/22/04), MGS will return to the Beta-Supplement mode of operating in order to avoid the HGA obstruction zone. We enter this mode of operation whenever the Earth Beta Angle decreases to less than 43 degrees.


Wednesday, June 30, 2004 (DOY 04-175/19:00:00 to DOY 04-182/19:00:00 UTC)

Launch / Days since Launch = Nov. 7, 1996 / 2786 days
Start of Mapping / Days since Start of Mapping = April 1, 1999 / 1911 days
Total Mapping Orbits = 23,742
Total Orbits = 25,425

Recent Events:

Background Sequences - The spacecraft is operating nominally in performing the daily recording and transmission of MGS science and engineering data. It is also operating nominally in the collection and transmission of Mars Exploration Rover data. The mm354 sequence has performed well since it started on 04-175 (6/23/04). It terminates near the end of day on 04-182 (6/30/04). The mm355 sequence, successfully uplinked on 04-182 (6/23/04), begins executing near the end of day on 04-182 (6/30/04).

Other - Seven Roll Only Targeted Observations (ROTOs) were successfully performed this week by the mz390 and mz391 mini-sequences. MGS has successfully completing 1,056 ROTOs to date.

MGS continues to relay data from Spirit and Opportunity when requested by the MER program. MGS has successfully relayed 11% of the total Spirit rover data and 12% of the total Opportunity rover data as of 6/30/04. MGS and Odyssey together have relayed 94% of Spirit's and 94% of Opportunity's cumulative data volume.

Spacecraft Health:

Spacecraft subsystems report nominal health and performance on the primary processor, SCP-1.

SCP-2 C-mode - SCP-2 is still in Contingency mode (C-mode) due to a failure of Starex to converge. We're looking to command SCP-2 out of C-mode next week. SCP-2 being in C-mode has no adverse impacts upon nominal spacecraft operations.

Flight software modifications were uplinked to ensure adequate power margins are maintained should MGS enter C-mode near aphelion. Normal degradation of the solar panels over time has reached a point where the solar panels cannot generate enough power during aphelion to support the Traveling Wave Tube Amplifier (TWTA) being powered 100% of the time. If MGS enters C-mode, the flight software will now autonomously power off the TWTA when MGS enters solar eclipse and power on the TWTA when MGS emerges from solar eclipse. Another flight software modification was uplinked to ensure the MOLA make-up heater remains off should MGS enter C-mode. The MOLA make-up heater was powered off as a power savings measure after the laser failed in June 2001.

Uplinks:

There were 21 uplinks to the spacecraft during the past week. They included new star catalog and ephemeris files, nominal instrument command loads, C-mode flight software changes, the mz390 & mz391 ROTO mini-sequences, and the mm354 & mm355 background sequences. 8,723 command files have been radiated to the spacecraft since launch.

Upcoming Events:

MGS will continue its UHF relay support for both rovers. ROTOs are planned for the mz392 and mz393 mini-sequences.

On 04-204 (7/22/04), MGS will return to the Beta-Supplement mode of operating in order to avoid the HGA obstruction zone. We enter this mode of operation whenever the Earth Beta Angle decreases to less than 43 degrees.


Wednesday, June 16, 2004 (DOY 04-161/19:00:00 to DOY 04-168/19:00:00 UTC)

Launch / Days since Launch = Nov. 7, 1996 / 2772 days
Start of Mapping / Days since Start of Mapping = April 1, 1999 / 1897 days
Total Mapping Orbits = 23,570
Total Orbits = 25,253

Recent Events:

Background Sequences - The spacecraft is operating nominally in performing the daily recording and transmission of MGS science and engineering data. It is also operating nominally in the collection and transmission of Mars Exploration Rover data. The mm352 sequence has performed well since it started on 04-161 (6/9/04). It terminates near the end of day on 04-168 (6/16/04). The mm353 sequence, successfully uplinked on 04-167 (6/15/04), begins executing near the end of day on 04-168 (6/16/04).

Other - Five Roll Only Targeted Observations (ROTOs) were successfully performed this week by the mz386 and mz387 mini-sequences. MGS has successfully completing 1,041 ROTOs to date.

MGS continues to relay data from Spirit and Opportunity when requested by the MER program. MGS has successfully relayed 12% of the total Spirit rover data and 12% of the total Opportunity rover data as of 6/16/04. MGS and Odyssey together have relayed 93% of Spirit's and 94% of Opportunity's cumulative data volume.

Spacecraft Health:

Spacecraft subsystems report nominal health and performance on the primary processor, SCP-1.

SCP-2 C-mode - Last week SCP-2, the backup processor, went into Contingency mode (C-mode) due to a failure of Starex to converge. This occurs occassionally on both the backup and primary processors (SCP). There are measures in place on the primary SCP to mitigate these occurrences by changing to MAP mode (nadir pointing) and augmenting the Star Sensor (CSA) with the horizon sensor (MHSA). However, the backup SCP is not allowed to command a primary SCP mode change to facilitate conversion. In fact, once the code is executed to command MAP mode, an ideal MAP attitude is computed and the vehicle attitude reinitialized with it. Consequently, when SCP-2 commanded MAP mode, the reinitialization of the attitude introduced a 16 degree error because the actual vehicle (under control of SCP-1) remained in the Relay-16 attitude (by definition, 16 degrees off-pointed from nadir). At this point the measured sun position was different from the ephemeris predicted sun position by more than the 5 deg tolerance. Persistence of this condition for 30 minutes caused SCP-2 to command C-mode. The spacecraft team is weighing the benefits of minimizing SCP-2 C-mode entries against the risk of having the primary and backup SCP in different software configurations. Recommendations will be forthcoming in the next week. Meanwhile SCP-2 will be recovered using the procedure developed on the last occurrence of this phenomenon.

There is no adverse impact to nominal spacecraft operations because SCP-1, not SCP-2 is in control. If MGS were to swap processors for any reason, the spacecraft would re-enter C-mode and the spacecraft team would recover MGS using well-established procedures.

IMU High Rate - The IMU transitions to high rate are now understood. For the CPROTO maneuvers where this occurred, 1) the vehicle was operating within 0.04 deg/sec of the low rate limit (0.5 deg/sec), 2) the solar array and HGA motion commands were moved forward in the sequence. After the image time the vehicle is commanded back to the Relay-16 attitude, and immediately thereafter (before the Relay-16 attitude is established), the HGA and Solar Arrays are returned to their normal tracking commands. The appendages have been motionless for approximately 20 minutes when they are released, and have substantial position errors to make up. The appendage gimbal motors react quickly to get the appendages back in the commanded position, and this torque introduces approximately a 0.1 deg/sec rate spike as the appendages are accelerated. While operating so close to the rate limit this spike is enough to cross the 0.5 deg/sec threshold and cause the IMU to switch to high rate. The appendage release commands have been moved three minutes later in the sequence, and MGS has successfully executed this sequence twice without recurrence of the IMU high rate.

Uplinks:

There were 16 uplinks to the spacecraft during the past week. They included new star catalog and ephemeris files, nominal instrument command loads, commands to diagnose the SCP-2 anomaly, the mz386 & mz387 ROTO mini-sequences, and the mm353 background sequence. 8,686 command files have been radiated to the spacecraft since launch.

Upcoming Events:

MGS will continue its UHF relay support for both rovers. ROTOs are planned for the mz387, mz388 and mz389 mini-sequences.


Wednesday, June 2, 2004 (DOY 04-147/19:00:00 to DOY 04-154/19:00:00 UTC)

Launch / Days since Launch = Nov. 7, 1996 / 2758 days
Start of Mapping / Days since Start of Mapping = April 1, 1999 / 1883 days
Total Mapping Orbits = 23,399
Total Orbits = 25,082

Recent Events:

Background Sequences - The spacecraft is operating nominally in performing the daily recording and transmission of MGS science and engineering data. It is also operating nominally in the collection and transmission of Mars Exploration Rover data. The mm350 sequence has performed well since it started on 04-147 (5/26/04). It terminates near the end of day on 04-154 (6/2/04). The mm351 sequence, successfully uplinked on 04-153 (6/1/04), begins executing near the end of day on 04-154 (6/2/04).

Other - MGS surpassed the milestone of 25,000 total orbits around Mars on 04-147 (5/26/04). The following day, 04-148 (5/27/04), it accomplished a "near perfect" orbit synchronization maneuver (OSM-7) to stop the orbital drift in Mars local mean solar time that MGS was experiencing as a result of the OSMs used to support the MER landings this past January.

Two Roll Only Targeted Observations (ROTOs) were successfully performed this week by the mz383 mini-sequence. MGS has successfully completing 1,027 ROTOs to date.

MGS continues to relay data from Spirit and Opportunity when requested by the MER program. MGS has successfully relayed 13% of the total Spirit rover data and 13% of the total Opportunity rover data as of 6/2/04. MGS and Odyssey together have relayed 93% of Spirit's and 94% of Opportunity's cumulative data volume.

Spacecraft Health:

Spacecraft subsystems report good health and performance over the past week.

Uplinks:

There were 15 uplinks to the spacecraft during the past week. They included new star catalog and ephemeris files, nominal instrument command loads, the mz382 OSM-7 mini-sequence, the mz383 ROTO mini-sequence, and the mm351 background sequence. 8,652 command files have been radiated to the spacecraft since launch.

Upcoming Events:

MGS will continue its UHF relay support for both rovers. ROTOs are planned for the mz384 and mz385 mini-sequences.


Wednesday, May 26, 2004 (DOY 04-140/19:00:00 to DOY 04-147/19:00:00 UTC)

Launch / Days since Launch = Nov. 7, 1996 / 2751 days
Start of Mapping / Days since Start of Mapping = April 1, 1999 / 1876 days
Total Mapping Orbits = 23,314
Total Orbits = 24,997

Recent Events:

Background Sequences - The spacecraft is operating nominally in performing the daily recording and transmission of MGS science and engineering data. It is also operating nominally in the collection and transmission of Mars Exploration Rover data. The mm349 sequence has performed well since it started on 04-140 (5/19/04). It terminates near the end of day on 04-147 (5/26/04). The mm350 sequence, successfully uplinked on 04-146 (5/25/04), begins executing near the end of day on 04-147 (5/26/04).

Other - Six Roll Only Targeted Observations (ROTOs) were successfully performed this week by the mz380 & mz381 mini-sequences. MGS has successfully completing 1,025 ROTOs to date.

MGS continues to relay data from Spirit and Opportunity when requested by the MER program. MGS has successfully relayed 14% of the total Spirit rover data and 15% of the total Opportunity rover data as of 5/26/04. MGS and Odyssey together have relayed 92% of Spirit's and 93% of Opportunity's cumulative data volume.

Spacecraft Health:

Spacecraft subsystems report good health and performance over the past week.

Uplinks:

There were 23 uplinks to the spacecraft during the past week. They included new star catalog and ephemeris files, nominal instrument command loads, the mz380 & mz381 ROTO mini-sequences, and the mm350 background sequence. 8,637 command files have been radiated to the spacecraft since launch.

Upcoming Events:

MGS will continue its UHF relay support for both rovers.

Just a few hours after the cutoff time for this report MGS will reach its 25,000th orbit around Mars. Though reaching 25,000 orbits has been inevitable for quite some time, we're certainly pleased that MGS will apparently reach this milestone in very good shape. We look forward to collected many more orbits of science data as MGS continues contributing toward the unveiling of Mars' secrets.

The mz382 orbit synchronization maneuver (OSM-7) mini-sequence is scheduled to execute tomorrow, 2004-148 (5/27/04). It will stop the orbital drift in Mars local mean solar time that MGS is experiencing as a result of the OSMs used to support the MER landings this past January.

ROTOs are planned for the mz383 mini-sequence.


Wednesday, May 19, 2004 (DOY 04-133/19:00:00 to DOY 04-140/19:00:00 UTC)

Launch / Days since Launch = Nov. 7, 1996 / 2744 days
Start of Mapping / Days since Start of Mapping = April 1, 1999 / 1869 days
Total Mapping Orbits = 23,228
Total Orbits = 24,911

Recent Events:

Background Sequences - The spacecraft is operating nominally in performing the daily recording and transmission of MGS science and engineering data. It is also operating nominally in the collection and transmission of Mars Exploration Rover data. The mm348 sequence has performed well since it started on 04-133 (5/12/04). It terminates near the end of day on 04-140 (5/19/04). The mm349 sequence, successfully uplinked on 04-138 (5/17/04), begins executing near the end of day on 04-140 (5/19/04).

Other - Five Roll Only Targeted Observations (ROTOs) were successfully performed this week by those same two mini-sequences. MGS has successfully completing 1019 ROTOs to date.

MGS continues to relay data from Spirit and Opportunity when requested by the MER program. MGS has successfully relayed 14% of the total Spirit rover data and 15% of the total Opportunity rover data as of 5/13/04. MGS and Odyssey together have relayed 92% of Spirit's and 93% of Opportunity's cumulative data volume.

Spacecraft Health: Spacecraft subsystems report good health and performance over the past week.

As expected, electrical power margins have been decreasing as MGS travels farther from the sun toward aphelion. Normally we use on-board command scripts to manage solar array motion to reduce the amount of mechanical noise introduced into some science instrument readings. In order to maintain appropriate power margins, we commanded the solar arrays to automatically track the sun instead of using the on-board scripts. This was done on 2004-133 (5/12/04) and the power margins have increased to predicted levels.

Uplinks:

There were 16 uplinks to the spacecraft during the past week. They included nominal instrument command loads, a command to change HGA positioning for spacecraft momentum management, the mz378 & mz379 ROTO mini-sequences, and the mm349 background sequence. 8,614 command files have been radiated to the spacecraft since launch.

Upcoming Events:

MGS will continue its UHF relay support for both rovers.

ROTOs are planned for the mz380 & mz381 mini-sequences.

An orbit synchronization maneuver (OSM-7) is scheduled for 2004-148 (5/27/04) to stop the orbital drift in Mars local mean solar time that MGS is experiencing as a result of the OSMs used to support the MER landings this past January.


Wednesday, May 12, 2004 (DOY 04-126/19:00:00 to DOY 04-133/19:00:00 UTC)

Launch / Days since Launch = Nov. 7, 1996 / 2737 days
Start of Mapping / Days since Start of Mapping = April 1, 1999 / 1862 days
Total Mapping Orbits = 23,142
Total Orbits = 24,825

Recent Events:

Background Sequences – The spacecraft is operating nominally in performing the daily recording and transmission of MGS science and engineering data. It is also operating nominally in the collection and transmission of Mars Exploration Rover data. The mm347 sequence has performed well since it started on 04-126 (5/05/04). It terminates near the end of day on 04-133 (5/12/04). The mm348 sequence, successfully uplinked on 04-132 (5/11/04), begins executing near the end of day on 04-133 (5/12/04).

Other – Two MOC Focus Calibrations were performed successfully by the mz376 & mz377 mini-sequences.

Five Roll Only Targeted Observations (ROTOs) were successfully performed this week by those same two mini-sequences. MGS has successfully completing 1014 ROTOs to date.

MGS continues to relay data from Spirit and Opportunity. MGS has successfully relayed 15% of the total Spirit rover data and 16% of the total Opportunity rover data as of 5/05/04. (I don’t have an update yet for this week) MGS and Odyssey together have relayed 91% of Spirit’s and 92% of Opportunity’s cumulative data volume.

Spacecraft Health:

Spacecraft subsystems report good health and performance over the past week.

Uplinks:

There were 8 uplinks to the spacecraft during the past week. They included nominal instrument command loads, the mz376 & mz377 mini-sequences containing both MOC Focus Calibrations and ROTOs, and the mm348 background sequence. 8,598 command files have been radiated to the spacecraft since launch.

Upcoming Events:

MGS will continue its UHF relay support for both rovers.

ROTOs are planned for the mz378 & mz379 mini-sequences.

Later today, 2004-133 (5/12/04), we will stop managing solar array motion with on-board scripts. We will command the solar arrays to a mode where they automatically track the sun. This will help ensure adequate electrical power margin as MGS approaches aphelion.

An orbit synchronization maneuver (OSM-7) is scheduled for 2004-148 (5/27/04) to stop the orbital drift in Mars local mean solar time that MGS is experiencing as a result of the OSMs used to support the MER landings this past January.


Wednesday, May 5, 2004 (DOY 04-119/19:00:00 to DOY 04-126/19:00:00 UTC)

Launch / Days since Launch = Nov. 7, 1996 / 2730 days
Start of Mapping / Days since Start of Mapping = April 1, 1999 / 1855 days
Total Mapping Orbits = 23,056
Total Orbits = 24,739

Recent Events:

Background Sequences – The spacecraft is operating nominally in performing the daily recording and transmission of MGS science and engineering data. It is also operating nominally in the collection and transmission of Mars Exploration Rover data. The mm346 sequence has performed well since it started on 04-119 (4/28/04). It terminates near the end of day on 04-126 (5/05/04). The mm347 sequence, successfully uplinked on 04-125 (5/04/04), begins executing near the end of day on 04-126 (5/05/04).

Other – Three MOC Focus Calibrations were performed successfully by the mz374 mini-sequence.

Five Roll Only Targeted Observations (ROTOs) were successfully performed this week. MGS has successfully completing 1009 ROTOs to date.

MGS continues to relay data from Spirit and Opportunity. MGS has successfully relayed 15% of the total Spirit rover data and 16% of the total Opportunity rover data as of 5/05/04. MGS and Odyssey together have relayed 91% of Spirit’s and 92% of Opportunity’s cumulative data volume.

Spacecraft Health: Spacecraft subsystems report good health and performance over the past week.

Uplinks:

There were 16 uplinks to the spacecraft during the past week. They included nominal instrument command loads, the mz375 MOC Focus Calibration and ROTO mini-sequence, and the mm347 background sequence. 8,590 command files have been radiated to the spacecraft since launch.

Upcoming Events:

MGS will continue its UHF relay support for both rovers.

More MOC Focus Calibrations and ROTOs will be performed in the mz376 & mz377 mini-sequences.

On 2004-133 (5/12/04), we will stop managing solar array motion with on-board scripts. We will command the solar arrays to a mode where they automatically track the sun. This will help ensure adequate electrical power margin as MGS approaches aphelion.

An orbit synchronization maneuver (OSM-7) is scheduled for 2004-148 (5/27/04) to stop the orbital drift in Mars local mean solar time that MGS is experiencing as a result of the OSMs used to support the MER landings this past January.


Wednesday, April 28, 2004 (DOY 04-112/19:00:00 to DOY 04-119/19:00:00 UTC)

Launch / Days since Launch = Nov. 7, 1996 / 2723 days
Start of Mapping / Days since Start of Mapping = April 1, 1999 / 1848 days
Total Mapping Orbits = 22,971
Total Orbits = 24,654

Recent Events:

Background Sequences – The spacecraft is operating nominally in performing the daily recording and transmission of MGS science and engineering data. It is also operating nominally in the collection and transmission of Mars Exploration Rover data. The mm345 sequence has performed well since it started on 04-112 (4/21/04). It terminates near the end of day on 04-119 (4/28/04). The mm346 sequence, successfully uplinked on 04-118 (4/27/04), begins executing near the end of day on 04-119 (4/28/04).

Other – Six Roll Only Targeted Observations (ROTOs) were successfully performed this week. MGS has surpassed the 1000 ROTO milestone by successfully completing 1004 ROTOs to date!

MGS continues to relay data from Spirit and Opportunity. MGS has successfully relayed 16% of the total Spirit rover data and 17% of the total Opportunity rover data as of 4/28/04. MGS and Odyssey together have relayed 91% of Spirit’s and 92% of Opportunity’s cumulative data volume.

Spacecraft Health:

Spacecraft subsystems report good health and performance over the past week.

Uplinks:

There were 11 uplinks to the spacecraft during the past week. They included nominal instrument command loads, a command to change HGA positioning for spacecraft momentum management, the mz372 & mz373 ROTO mini-sequences, the mz374 MOC Focus Calibration mini-sequence, and the mm346 background sequence. 8,574 command files have been radiated to the spacecraft since launch.

Upcoming Events:

MGS will continue its UHF relay support for both rovers.

Three MOC Focus Calibrations will be performed in mz374. Five ROTOs are planned for the mz375 mini-sequence.


Wednesday, April 21, 2004 (DOY 04-105/19:00:00 to DOY 04-112/19:00:00 UTC)

Launch / Days since Launch = Nov. 7, 1996 / 2716 days
Start of Mapping / Days since Start of Mapping = April 1, 1999 / 1841 days
Total Mapping Orbits = 22,886
Total Orbits = 24,569

Recent Events:

Background Sequences – The spacecraft is operating nominally in performing the daily recording and transmission of MGS science and engineering data. It is also operating nominally in the collection and transmission of Mars Exploration Rover data. The mm344 sequence has performed well since it started on 04-105 (4/14/04). It terminates near the end of day on 04-112 (4/21/04). The mm345 sequence, successfully uplinked on 04-111 (4/20/04), begins executing near the end of day on 04-112 (4/21/04).

Other – Six Roll Only Targeted Observations (ROTOs) were successfully performed this week. MGS has successfully completed 998 ROTOs to date.

MGS continues to relay data from Spirit and Opportunity. MGS has successfully relayed 16% of the total Spirit rover data and 18% of the total Opportunity rover data as of 4/21/04. MGS and Odyssey together have relayed 90% of Spirit’s and 91% of Opportunity’s cumulative data volume.

Spacecraft Health: Spacecraft subsystems report good health and performance over the past week.

Uplinks:

There were 22 uplinks to the spacecraft during the past week. They included new star catalog and ephemeris files, nominal instrument command loads, a command to change HGA positioning for spacecraft momentum management, the mz370 & mz371 ROTO mini-sequences, and the mm345 background sequence. 8,563 command files have been radiated to the spacecraft since launch.

Upcoming Events:

MGS will continue its UHF relay support for both rovers.

ROTOs are planned for the mz372 & mz373 mini-sequences.


Wednesday, April 14, 2004 (DOY 04-098/19:00:00 to DOY 04-105/19:00:00 UTC)

Launch / Days since Launch = Nov. 7, 1996 / 2709 days
Start of Mapping / Days since Start of Mapping = April 1, 1999 / 1834 days
Total Mapping Orbits = 22,800
Total Orbits = 24,483

Recent Events:

Background Sequences – The spacecraft is operating nominally in performing the daily recording and transmission of MGS science and engineering data. It is also operating nominally in the collection and transmission of Mars Exploration Rover data. The mm343 sequence has performed well since it started on 04-098 (4/07/04). It terminates near the end of day on 04-105 (4/14/04). The mm344 sequence, successfully uplinked on 04-104 (4/13/04), begins executing near the end of day on 04-105 (4/14/04).

Other – Eight Roll Only Targeted Observations (ROTOs) were successfully performed this week. MGS has successfully completed 992 ROTOs to date.

MGS continues to relay data from Spirit and Opportunity. MGS has successfully relayed 15% of the total Spirit rover data and 19% of the total Opportunity rover data as of 4/14/04. MGS and Odyssey together have relayed 89% of Spirit’s and 90% of Opportunity’s cumulative data volume.

Spacecraft Health:

Spacecraft subsystems report good health and performance over the past week.

Despite its overall good health and performance, MGS did experience an anomaly on 04-098 (4/07/04) that resulted in a brief loss of communications and some loss of S&E2 science data. The Star Identification Software experienced difficulty in identifying stars because the star catalog uplinked earlier in the day was corrupted. Because MGS must correctly identify stars to maintain its attitude knowledge, it began executing fault protection measures designed to improve its ability to identify stars. (The loss of communications occurred when the spacecraft transmitter was turned off while the spacecraft maneuvered to a nadir attitude.) Though these measures were destined to fail because the star catalog itself was bad, they provided the Spacecraft Team enough time to diagnose and rectify the problem by uplinking a good star catalog before the spacecraft would have entered Contingency Mode. The team now understands what corrupted the star catalog and has implemented short-term corrective action until the ground software is fixed.

Uplinks:

There were 23 uplinks to the spacecraft during the past week. They included new star catalog and ephemeris files, nominal instrument command loads, a command to change HGA positioning for spacecraft momentum management, anomaly recovery files, the mz368 & mz369 ROTO mini-sequences, and the mm344 background sequence. 8,541 command files have been radiated to the spacecraft since launch.

Upcoming Events:

MGS will continue its UHF relay support for both rovers.

ROTOs are planned for the mz370 & mz371 mini-sequences.


Wednesday, April 7, 2004 (DOY 04-091/19:00:00 to DOY 04-098/19:00:00 UTC)

Launch / Days since Launch = Nov. 7, 1996 / 2702 days
Start of Mapping / Days since Start of Mapping = April 1, 1999 / 1827 days
Total Mapping Orbits = 22,715
Total Orbits = 24,398

Recent Events:

Background Sequences – The spacecraft is operating nominally in performing the daily recording and transmission of MGS science and engineering data. It is also operating nominally in the collection and transmission of Mars Exploration Rover data. The mm342 sequence has performed well since it started on 04-091 (3/31/04). It terminates near the end of day on 04-098 (4/07/04). The mm343 sequence, successfully uplinked on 04-097 (4/06/04), begins executing near the end of day on 04-098 (4/07/04).

Other – Three Roll Only Targeted Observations (ROTOs) were successfully performed this week. MGS has successfully completed 984 ROTOs to date.

MGS transitioned successfully from its medium to low data rates (record, playback, and real-time downlink) on 04-092 (4/01/04). This was needed to increase the telecommunications link margins as it travels farther from Earth.

MGS continues to relay data from Spirit and Opportunity. MGS has successfully relayed 16% of the total Spirit rover data and 20% of the total Opportunity rover data as of 3/24/04. MGS and Odyssey together have relayed 89% of Spirit’s and 90% of Opportunity’s cumulative data volume.

Spacecraft Health:

Spacecraft subsystems report good health and performance over the past week.

Uplinks:

There were 15 uplinks to the spacecraft during the past week. They included new star catalog and ephemeris files, nominal instrument command loads, a command to change HGA positioning for spacecraft momentum management, the mz366, mz367, & mz368 ROTO mini-sequences, and the mm343 background sequence. 8,518 command files have been radiated to the spacecraft since launch.

Upcoming Events:

MGS will continue its UHF relay support for both rovers.

ROTOs are planned for the mz368 & mz369 mini-sequences.


Wednesday, March 31, 2004 (DOY 04-084/19:00:00 to DOY 04-091/19:00:00 UTC)

Launch / Days since Launch = Nov. 7, 1996 / 2695 days
Start of Mapping / Days since Start of Mapping = April 1, 1999 / 1820 days
Total Mapping Orbits = 22,629
Total Orbits = 24,312

Recent Events:

Background Sequences – The spacecraft is operating nominally in performing the daily recording and transmission of MGS science and engineering data. It is also operating nominally in the collection and transmission of Mars Exploration Rover data. The mm341 sequence has performed well since it started on 04-084 (3/24/04). It terminates near the end of day on 04-091 (3/31/04). The mm342 sequence, successfully uplinked on 04-090 (3/30/04), begins executing near the end of day on 04-091 (3/31/04).

Other – Five Roll Only Targeted Observations (ROTOs) were successfully performed this week. MGS has successfully completed 981 ROTOs to date.

MGS continues to relay data from Spirit and Opportunity. MGS has successfully relayed 15% of the total Spirit rover data and 20% of the total Opportunity rover data as of 3/24/04. MGS and Odyssey together have relayed 89% of Spirit’s and 89% of Opportunity’s cumulative data volume.

Spacecraft Health:

Spacecraft subsystems report good health and performance over the past week.

Uplinks:

There were 20 uplinks to the spacecraft during the past week. They included new star catalog and ephemeris files, nominal instrument command loads, a command to change HGA positioning for spacecraft momentum management, the mz364 and mz365 ROTO mini-sequences, and the mm342 background sequence. 8,503 command files have been radiated to the spacecraft since launch.

Upcoming Events:

MGS will continue its UHF relay support for both rovers.

ROTOs are planned for the mz366 & mz367 mini-sequences.

MGS will transition from its medium to low data rates (record, playback, and real-time downlink) on 04-092 (4/01/04). This is needed to increase its telecommunications link margins as it travels farther from Earth.


Wednesday, March 24, 2004 (DOY 04-077/19:00:00 to DOY 04-084/19:00:00 UTC)

Launch / Days since Launch = Nov. 7, 1996 / 2688 days
Start of Mapping / Days since Start of Mapping = April 1, 1999 / 1813 days
Total Mapping Orbits = 22,544
Total Orbits = 24,227

Recent Events:

Background Sequences – The spacecraft is operating nominally in performing the daily recording and transmission of MGS science and engineering data. It is also operating nominally in the collection and transmission of Mars Exploration Rover data. The mm340 sequence has performed well since it started on 04-077 (3/17/04). It terminates near the end of day on 04-084 (3/24/04). The mm341 sequence, successfully uplinked on 04-083 (3/23/04), begins executing near the end of day on 04-084 (3/24/04).

Other – Five Roll Only Targeted Observations (ROTOs) were successfully performed this week. MGS has successfully completed 976 ROTOs to date.

MGS continues to relay data from Spirit and Opportunity. MGS has successfully relayed 16% of the total Spirit rover data and 20% of the total Opportunity rover data as of 3/24/04. MGS and Odyssey together have relayed 87% of Spirit’s and 88% of Opportunity’s cumulative data volume.

Spacecraft Health:

Spacecraft subsystems report good health and performance over the past week.

Uplinks:

There were 9 uplinks to the spacecraft during the past week. They included new star catalog and ephemeris files, nominal instrument command loads, a command to change HGA positioning for spacecraft momentum management, the mz363 ROTO mini-sequence, and the mm341 background sequence. 8,483 command files have been radiated to the spacecraft since launch.

Upcoming Events:

MGS will continue its UHF relay support for both rovers.

ROTOs are planned for the mz364 & mz365 mini-sequences.

MGS will transition from its medium to low data rates (record, playback, and real-time downlink) on 04-092 (4/01/04). This is needed to increase its telecommunications link margins as it travels farther from Earth.


Wednesday, March 17, 2004 (DOY 04-070/19:00:00 to DOY 04-077/19:00:00 UTC)

Launch / Days since Launch = Nov. 7, 1996 / 2681 days
Start of Mapping / Days since Start of Mapping = April 1, 1999 / 1806 days
Total Mapping Orbits = 22,459
Total Orbits = 24,142

Recent Events:

Background Sequences – The spacecraft is operating nominally in performing the daily recording and transmission of MGS science and engineering data. It is also operating nominally in the collection and transmission of Mars Exploration Rover data. The mm339 sequence has performed well since it started on 04-070 (3/10/04). It terminates near the end of day on 04-077 (3/17/04). The mm340 sequence, successfully uplinked on 04-076 (3/16/04), begins executing near the end of day on 04-077 (3/17/04).

Other – Three Roll Only Targeted Observations (ROTOs) were successfully performed this week. MGS has successfully completed 971 ROTOs to date.

MGS continues to relayed data from Spirit and Opportunity. The UHF relay passes for both MGS and Odyssey have been executing as planned. Total UHF data volume for this past week is not yet available.

Spacecraft Health:

Spacecraft subsystems report good health and performance over the past week.

Uplinks:

There were 22 uplinks to the spacecraft during the past week. They included new star catalog and ephemeris files, nominal instrument command loads, the mz360, mz361 and mz362 ROTO mini-sequences, and the mm340 background sequence. 8,474 command files have been radiated to the spacecraft since launch.

Upcoming Events:

MGS will continue its UHF relay support for both rovers.

ROTOs are planned for the mz363 & mz364 mini-sequences.


Wednesday, March 10, 2004 (DOY 04-063/19:00:00 to DOY 04-070/19:00:00 UTC)

Launch / Days since Launch = Nov. 7, 1996 / 2674 days
Start of Mapping / Days since Start of Mapping = April 1, 1999 / 1799 days
Total Mapping Orbits = 22,372
Total Orbits = 24,055

Recent Events:

Background Sequences – The spacecraft is operating nominally in performing the daily recording and transmission of MGS science and engineering data. It is also operating nominally in the collection and transmission of Mars Exploration Rover data. The mm338 sequence has performed well since it started on 04-063 (3/3/04). It terminates near the end of day on 04-070 (3/10/04). The mm339 sequence, successfully uplinked on 04-069 (3/9/04), begins executing near the end of day on 04-070 (3/10/04).

Other – Four Roll Only Targeted Observations (ROTOs) were successfully performed this week. MGS has successfully completed 968 ROTOs to date.

MGS transitioned successfully from the 3-part solar array motion scripts to the 4-part solar array motion scripts on 04-064 (3/04/04). These scripts will compensate for the decreasing power levels MGS is experiencing as it approaches aphelion.

MGS has successfully relayed 15% of the total Spirit rover data and 19% of the total Opportunity rover data as of 3/9/04. MGS and Odyssey together have relayed 86% of Spirit’s and 85% of Opportunity’s cumulative data volume.

Spacecraft Health:

Spacecraft subsystems report good health and performance over the past week.

Uplinks:

There were 9 uplinks to the spacecraft during the past week. They included new star catalog and ephemeris files, nominal instrument command loads, the mz358 and mz359 ROTO mini-sequences, and the mm339 background sequence. 8,452 command files have been radiated to the spacecraft since launch.

Upcoming Events:
MGS will continue its UHF relay support for both rovers.

ROTOs are planned for the mz360 & mz361 mini-sequences.


Wednesday, March 3, 2004 (DOY 04-056/19:00:00 to DOY 04-063/19:00:00 UTC)

Launch / Days since Launch = Nov. 7, 1996 / 2667 days
Start of Mapping / Days since Start of Mapping = April 1, 1999 / 1792 days
Total Mapping Orbits = 22,287
Total Orbits = 23,970

Recent Events:

Background Sequences - The spacecraft is operating nominally in performing the daily recording and transmission of MGS science and engineering data. It is also operating nominally in the collection and transmission of Mars Exploration Rover data. The mm337 sequence has performed well since it started on 04-056 (2/25/04). It terminates near the end of day on 04-063 (3/3/04). The mm338 sequence, successfully uplinked on 04-062 (3/2/04), begins executing near the end of day on 04-063 (3/03/04).

Other - Two Roll Only Targeted Observations (ROTOs) were successfully performed this week. MGS has successfully completed 964 ROTOs to date.

MGS has successfully relayed 15% of the total Spirit rover data and 20% of the total Opportunity rover data as of 3/2/04. MGS and Odyssey together have relayed 86% of Spirit's and 83% of Opportunity's cumulative data volume.

Spacecraft Health:

Spacecraft subsystems report good health and performance over the past week.

Last week I reported that a helium line pressure measurement dropped unexpectedly by about 50 psia and stabilized at 170 psia. The most likely cause, based upon the data analyzed to date, is that some component(s) failed within the pressure transducer that is reporting the anomalous pressure. It appears to be a permanent failure and constitutes no threat to the MGS spacecraft. The spacecraft team will continue to closely monitor the pressure and temperature data on and near this helium line.

Uplinks:

There were 18 uplinks to the spacecraft during the past week. They included new star catalog and ephemeris files, nominal instrument command loads, the mz357 ROTO mini-sequence, and the mm338 background sequence. 8,443 command files have been radiated to the spacecraft since launch.

Upcoming Events:

MGS will continue its UHF relay support for both rovers.

ROTOs are planned for the mz358 & mz359 mini-sequences.

The MGS team regulates MGS electrical power output using on-board scripts that command solar array (SA) positions throughout each orbit. Managing excess power in this way helps extend the life of the Partial Shunt Assemblies. MGS will transition from the 3-part SA motion scripts to the 4-part SA motion scripts on 04-064 (3/04/04) when the mm338 background sequence begins executing. These scripts will compensate for the decreasing power levels MGS experiences as it approaches aphelion.


Wednesday, February 25, 2004 (DOY 04-049/19:00:00 to DOY 04-056/19:00:00 UTC)

Launch / Days since Launch = Nov. 7, 1996 / 2660 days
Start of Mapping / Days since Start of Mapping = April 1, 1999 / 1785 days
Total Mapping Orbits = 22,201
Total Orbits = 23,884

Recent Events:

Background Sequences - The spacecraft is operating nominally in performing the daily recording and transmission of MGS science and engineering data. It is also operating nominally in the collection and transmission of Mars Exploration Rover data. The mm336 sequence has performed well since it started on 04-049 (2/18/04). It terminates near the end of day on 04-056 (2/25/04). The mm337 sequence, successfully uplinked on 04-055 (2/24/04), begins executing near the end of day on 04-056 (2/25/04).

Other - Three Roll Only Targeted Observations (ROTOs) were successfully performed this week. MGS has successfully completed 962 ROTOs to date.

MGS has successfully relayed 13% of the total Spirit rover data and 19% of the total Opportunity rover data as of 2/24/04. MGS and Odyssey together have relayed 85% of Spirit's and 80% of Opportunity's cumulative data volume.

Spacecraft Health:

Spacecraft subsystems report good health and performance over the past week.

Earlier today, a helium line pressure measurement dropped unexpectedly by about 50 psia and stabilized at 170 psia. The associated transducer monitors a closed volume of gaseous helium (Ghe) trapped between the High Pressure Latch Valve and the two pairs of check valves leading to the propellant tanks in the now isolated helium supply system. The fact that the pressure stabilized at 170 psia combined with the apparent lack of corroborating thermal sensor data seems to rule out the possibility of an external leak. It's more likely that an electronic failure of some sort is affecting the telemetry readings. The spacecraft team will continue its investigation as the data recorded during the time of the failure gets played back tomorrow.

Uplinks:

There were 16 uplinks to the spacecraft during the past week. They included nominal instrument command loads, the mz354, mz355, & mz356 ROTO mini-sequences, and the mm337 background sequence. 8,425 command files have been radiated to the spacecraft since launch.

Upcoming Events:

MGS will continue its UHF relay support for both rovers.

ROTOs are planned for the mz357 mini-sequence.

The MGS team regulates MGS electrical power output using on-board scripts that command solar array (SA) positions throughout each orbit. Managing excess power in this way helps extend the life of the Partial Shunt Assemblies. MGS will transition from the 3-part SA motion scripts to the 4-part SA motion scripts on 04-064 (3/04/04) when the mm338 background sequence begins executing. These scripts will compensate for the decreasing power levels MGS experiences as it approaches aphelion.


Wednesday, February 18, 2004 (DOY 04-042/19:00:00 to DOY 04-049/19:00:00 UTC)

Launch / Days since Launch = Nov. 7, 1996 / 2653 days
Start of Mapping / Days since Start of Mapping = April 1, 1999 / 1778 days
Total Mapping Orbits = 22,115
Total Orbits = 23,798

Recent Events:

Background Sequences – The spacecraft is operating nominally in performing the daily recording and transmission of MGS science and engineering data. It is also operating nominally in the collection and transmission of Mars Exploration Rover data. The mm335 sequence has performed well since it started on 04-042 (2/11/04). It terminates near the end of day on 04-049 (2/18/04). The mm336 sequence, successfully uplinked on 04-048 (2/17/04), begins executing near the end of day on 04-049 (2/18/04).

Other – Two Roll Only Targeted Observations (ROTOs) were successfully performed this week. MGS has successfully completed 959 ROTOs to date.

MGS has successfully relayed 14% of the total Spirit rover data and 19% of the total Opportunity rover data as of 2/17/04. MGS and Odyssey together have relayed 85% of Spirit’s and 79% of Opportunity’s cumulative data volume.

Spacecraft Health:

Spacecraft subsystems report good health and performance.

The data return anomaly reported last week has been solved. The data received by the MR was not collected by the MOC because of a very rare command timing and protocol conflict within the MOC. Procedures are in place to preclude this from happening in the future. The MER project was successful in retransmitting the MER data.

Uplinks:

There were 14 uplinks to the spacecraft during the past week. They included nominal instrument command loads, the mz353 ROTO mini-sequence, and the mm336 background sequence. 8,409 command files have been radiated to the spacecraft since launch.

Upcoming Events:

Continued UHF relay support for both rovers.


Wednesday, February 11, 2004 (DOY 04-035/19:00:00 to DOY 04-042/19:00:00 UTC)

Launch / Days since Launch = Nov. 7, 1996 / 2646 days
Start of Mapping / Days since Start of Mapping = April 1, 1999 / 1771 days
Total Mapping Orbits = 22,030
Total Orbits = 23,713

Recent Events:

Background Sequences – The spacecraft is operating nominally in performing the daily recording and transmission of MGS science and engineering data. It is also operating nominally in the collection and transmission of Mars Exploration Rover data.* The mm334 sequence has performed well since it started on 04-035 (2/04/04). It terminates near the end of day on 04-042 (2/11/04). The mm335 sequence, successfully uplinked on 04-041 (2/10/04), begins executing near the end of day on 04-042 (2/11/04).

Other – One CPROTO and three ROTOs were successfully performed this week. The CPROTO image, taken on 04-037 (2/6/04), and the ROTO image of 04-032 (2/1/04) were released by NASA on 04-040 (2/9/04). More great images from MGS! The photos show the Opportunity lander and rover in a crater, the backshell and parachute, the heat shield impact site, the first airbag bounce mark, and rocket firing effects on the surface of Mars! See for yourself at http://www.msss.com/mars_images/moc/2004/02/09. MGS has successfully completed 957 ROTOs to date.

MGS successfully transitioned from its high to medium data rates (record, playback, and real-time downlink) on 04-036 (2/05/04). This was needed to increase telecommunications link margins as the distance between MGS and Earth increases.

Spacecraft Health:

Spacecraft subsystems report good health and performance.

*The only anomaly occurred earlier today when the MER-B Opportunity data MGS was supposed to have relayed to Earth couldn’t be found on the project database. Preliminary indications show nominal performance by the Opportunity rover, the MGS UHF Mars Relay (MR), the MGS Mars Orbiter Camera (MOC), and the Deep Space Network ground station. MGS will playback MOC and spacecraft engineering data tonight that should shed more light on this mystery. Stay tuned.

Uplinks:

There were 17 uplinks to the spacecraft during the past week. They included nominal instrument command loads, a command to change HGA positioning for spacecraft momentum management, the mz351 CPROTO mini-sequence, the mz352 ROTO mini-sequence, and the mm335 background sequence. 8,395 command files have been radiated to the spacecraft since launch.

Upcoming Events:

Continued UHF relay support for both rovers.


Wednesday, February 4, 2004 (DOY 04-028/19:00:00 to DOY 04-035/19:00:00 UTC)

Launch / Days since Launch = Nov. 7, 1996 / 2639 days
Start of Mapping / Days since Start of Mapping = April 1, 1999 / 1764 days
Total Mapping Orbits = 21,944
Total Orbits = 23,627

Recent Events:

Background Sequences – The spacecraft is operating nominally in performing the daily recording and transmission of MGS science and engineering data. It is also operating nominally in the collection and transmission of Mars Exploration Rover data. The mm333 sequence has performed well since it started on 04-028 (1/28/04). It terminates near the end of day on 04-035 (2/04/04). The mm334 sequence, successfully uplinked on 04-034 (2/03/04), begins executing near the end of day on 04-035 (2/04/04).

Other – One CPROTO and one ROTO were successfully performed this week. MGS has successfully completed 953 ROTOs to date.

Spacecraft Health:

Spacecraft subsystems report good health and performance.

Uplinks:

There were 17 uplinks to the spacecraft during the past week. They included nominal instrument command loads, the mz349 CPROTO mini-sequence, mz350 ROTO mini-sequence, and the mm334 background sequence. 8,378 command files have been radiated to the spacecraft since launch.

Upcoming Events:

Continued UHF relay support for both rovers. MGS will transition from its high to medium data rates (record, playback, and real-time downlink) on 04-036 (2/05/04). This is needed to increase its telecommunications link margins as it travels farther from Earth.


Wednesday, January 28, 2004 (DOY 04-021/19:00:00 to DOY 04-028/19:00:00 UTC)

Launch / Days since Launch = Nov. 7, 1996 / 2632 days
Start of Mapping / Days since Start of Mapping = April 1, 1999 / 1757 days
Total Mapping Orbits = 21,859
Total Orbits = 23,542

Recent Events:

Background Sequences – The spacecraft is operating nominally in performing the daily recording and transmission of MGS science and engineering data. An MGS Mars Relay (MR) UHF transmitter (a.k.a. beacon) power anomaly prevented the MER-B rover Opportunity from responding to the MGS beacon on the SOL-2 AM over flight. So, no relay of MER data was conducted on that pass. The MR was power cycled to return it to normal operation. Since then, MGS has been operating nominally in the collection and transmission of Mars Exploration Rover data. The mm332 sequence has performed well since it started on 04-021 (1/21/04). It terminates near the end of day on 04-028 (1/28/04). The mm333 sequence, successfully uplinked on 04-027 (1/27/04), begins executing near the end of day on 04-028 (1/28/04).

Other – On 04-022 (1/22/04), NASA released the MGS CPROTO image taken of the Spirit landing site on 04-019 (1/19/04). It’s absolutely fantastic! It shows the Spirit lander, backshell, parachute, heat shield, and airbag bounce marks on Mars! Congratulations to the SCT and MOC teams for developing a way to increase the effective resolution of the MOC by compensating for planetary and spacecraft motion while imaging. What a great accomplishment! See for yourself at http://www.msss.com/mars_images/moc/2004/01/23/index.html.

Opportunity’s Entry Descent and Landing (EDL) took place on 04-025 (1/25/04). Congratulations to the MER team for a second successful landing on Mars! MGS was successful in collecting the EDL data from Opportunity. The MR beacon power anomaly cited above did not affect the EDL relay because Opportunity was in a constant broadcast mode. The MR receiver picked up the Opportunity UHF signal from its first EDL transmission until MGS set over the Mars horizon. The EDL data was then transmitted successfully to Earth!

On 04-027 (1/27/04), the MGS MR was commanded to its highest data rate for receiving transmissions from both rovers. The Mars Orbiter Camera (MOC) is operating extremely well in collecting and storing rover data, then supplying it to the X-band telemetry stream.

On 04-028 (1/28/04), the MGS solar array elevation offset angles were changed from 25 degrees to 0 degrees to increase electrical power margins as MGS travels farther from the sun.

No ROTOs were performed this week. MGS has successfully completed 951 ROTOs to date.

Spacecraft Health:

Spacecraft subsystems report good health and performance aside from the MR anomaly on 04-025 (01/25/04). The rover Opportunity did not detect a beacon signal from MGS because the MR was transmitting at roughly half power. The MR returned to expected power levels after being powered off, then on. The MGS team will continue to trend and investigate MR performance to determine the cause of the temporary decrease in power output.

Uplinks:

There were 24 uplinks to the spacecraft during the past week. They included nominal instrument command loads, a command to change HGA positioning for spacecraft momentum management, real-time MR mode commands, the mz347 and mz348 MR mode change mini-sequences, commands to cancel those mini-sequences following the MR anomaly, commands to power cycle the MR, new solar array motion scripts, and the mm333 background sequence. 8,361 command files have been radiated to the spacecraft since launch.

Upcoming Events:

Continued UHF relay support for both rovers. MGS will transition from its high to medium data rates (record, playback, and real-time downlink) on 04-036 (2/05/04). This is needed to increase its telecommunications link margins as it travels farther from Earth.


Wednesday, January 21, 2004 (DOY 04-014/19:00:00 to DOY 04-021/19:00:00 UTC)

Launch / Days since Launch = Nov. 7, 1996 / 2625 days
Start of Mapping / Days since Start of Mapping = April 1, 1999 / 1750 days
Total Mapping Orbits = 21,773
Total Orbits = 23,456

Recent Events:

Background Sequences - The spacecraft is operating nominally in performing the daily recording and transmission of MGS science and engineering data. It is also operating nominally in the collection and transmission of Mars Exploration Rover data. The mm331 sequence has performed well since it started on 04-014 (1/14/04). It terminates near the end of day on 04-021 (1/21/04). The mm332 sequence, successfully uplinked on 04-020 (1/20/04), begins executing near the end of day on 04-021 (1/21/04).

Other -The MGS Mars Relay (MR) UHF receiver continues to perform well in obtaining data transmitted from the rover Spirit. The Mars Orbiter Camera (MOC) is operating extremely well in collecting and storing the rover data, then supplying it to the X-band telemetry stream.

A single CPROTO was performed successfully by the mz346 mini-sequence. MGS has successfully completed 951 ROTOs to date.

Spacecraft Health: Spacecraft subsystems report good health and performance.

Uplinks:

There were 8 uplinks to the spacecraft during the past week. They included nominal instrument command loads, the mz345 MRUHF mode change mini-sequence, the mz346 CPROTO mini-sequence, and the mm332 background sequence. 8,337 command files have been radiated to the spacecraft since launch.

Upcoming Events:

Continued UHF relay support for the rover Spirit. MER-B (Opportunity) Entry Descent and Landing (EDL) on 04-025 (1/25/04). On 04-028 (1/28/04), the MGS solar array elevation offset angles will be adjusted from 25 degrees to 0 degrees to increase electrical power margins as MGS travels farther from the sun. MGS will transition from its high to medium data rates (record, playback, and real-time downlink) on 04-036 (2/05/04). This is needed to increase its telecommunications link margins as it travels farther from Earth.


Wednesday, January 14, 2004 (DOY 04-007/19:00:00 to DOY 04-014/19:00:00 UTC)

Launch / Days since Launch = Nov. 7, 1996 / 2618 days
Start of Mapping / Days since Start of Mapping = April 1, 1999 / 1743 days
Total Mapping Orbits = 21,687
Total Orbits = 23,370

Recent Events:

Background Sequences – The spacecraft is operating nominally in performing the daily recording and transmission of MGS science and engineering data. It is also operating nominally in the collection and transmission of Mars Exploration Rover data. The mm330 sequence has performed well since it started on 04-007 (1/7/04). It terminates near the end of day on 04-014 (1/14/04). The mm331 sequence, successfully uplinked on 04-013 (1/13/04), begins executing near the end of day on 04-014 (1/14/04).

Other –The MGS Mars Relay (MR) continues to perform well. The data successfully transmitted across the UHF link between the MR and the rover Spirit consistently exceeds the storage space allocated on MGS for rover data.

The Orbit Synchronization Maneuver tentatively planned for 04-018 (1/18/04) was canceled because MGS is projected to be in the proper position for the MER Opportunity arrival.

A single CPROTO was performed successfully by the mz343 mini-sequence. MGS has successfully completed 950 ROTOs to date.

Spacecraft Health:

Spacecraft subsystems report good health and performance.

Uplinks:

There were 15 uplinks to the spacecraft during the past week. They included new star catalog and ephemeris files, nominal instrument command loads, the mz343 CPROTO mini-sequence, the mz344 MRUHF mode change mini-sequence, a command to change HGA positioning for spacecraft momentum management, and the mm331 background sequence. 8,329 command files have been radiated to the spacecraft since launch.

Upcoming Events:

Continued UHF relay support for the rover Spirit. A CPROTO is planned for 04-019 (1/19/04) in the mz346 mini-sequence. MER-B (Opportunity) Entry Descent and Landing (EDL) on 04-025 (1/25/04).



Wednesday, January 7, 2004 (DOY 03-365/19:00:00 to DOY 04-007/19:00:00 UTC)

Launch / Days since Launch = Nov. 7, 1996 / 2611 days
Start of Mapping / Days since Start of Mapping = April 1, 1999 / 1736 days
Total Mapping Orbits = 21,601
Total Orbits = 23,284

Recent Events:

Background Sequences – The spacecraft is operating nominally in performing the daily recording and transmission of science data. The mm329 sequence has performed well since it started on 03-365 (12/31/03). It terminates near the end of day on 04-007 (1/7/04). The mm330 sequence, successfully uplinked early on 04-007 (1/7/04), begins executing near the end of the same day.

Other – Congratulations to the MER team for a successful landing on Mars! The MGS Mars Relay (MR) UHF performance during the MER-A (Spirit) Entry, Descent, and Landing (EDL) was absolutely spectacular! The MR picked up the Spirit UHF signal from its first transmission in flight and maintained lock through the remainder of descent and landing until MGS set over the Mars horizon. All EDL and landed data transmitted from Spirit to MGS was successfully transmitted to Earth! The UHF link has performed so well that MER requested MGS to increase the data rate on 04-007 (1/7/04).

On 04-004 (1/04/04), MGS successfully performed an Orbit Synchronization Maneuver (OSM) to start positioning itself for MER-B (Opportunity) EDL. Performance errors were very small.

No Roll Only Targeted Observations (ROTOs) were performed as priority was given to supporting the MER-A rover during EDL and surface operations. MGS has successfully completed 949 ROTOs to date.

Spacecraft Health:

Spacecraft subsystems report good health and performance.

Uplinks:

There were 22 uplinks to the spacecraft during the past week. They included new star catalog and ephemeris files, nominal instrument command loads, the mz341 OSM mini-sequence, a command to change HGA positioning for spacecraft momentum management, a Mars Relay UHF mode change, and the mm330 background sequence. 8,314 command files have been radiated to the spacecraft since launch.

Upcoming Events:

Continued UHF relay support for the rover Spirit. Another Orbit Synchronization Maneuver is planned for 04-018 (1/18/04) to position MGS for the arrival of the rover Opportunity.


Wednesday, December 31, 2003 (DOY 358/19:00:00 to DOY 365/19:00:00 UTC)

Launch / Days since Launch = Nov. 7, 1996 / 2604 days
Start of Mapping / Days since Start of Mapping = April 1, 1999 / 1729 days
Total Mapping Orbits = 21,516
Total Orbits = 23,199

Recent Events:

Background Sequences – The spacecraft is operating nominally in performing the daily recording and transmission of science data. The mm328 sequence has performed well since it started on 03-358 (12/24/03). It terminates near the end of day on 03-365 (12/31/03). The mm329 sequence, successfully uplinked on 03-364 (12/30/03), begins executing near the end of 03-365 (12/31/03).

Other – A single CPROTO was performed successfully by the mz339 mini-sequence. MGS has successfully completed 949 ROTOs to date.

Spacecraft Health: Spacecraft subsystems report good health and performance. An adjustment was made to the temperature where fault protection switches from the primary to the secondary propellant line heaters. This expected adjustment was required because the HGA damper heaters were powered off on 03-357 (12/23/03) to increase power margins.

Uplinks:

There were 15 uplinks to the spacecraft during the past week. They included new star catalog and ephemeris files, nominal instrument command loads, an update to a thermal fault protection parameter, the mz340 mini-sequence to command the MGS Mars Relay UHF receiver for MER rover transmissions, a command to change HGA positioning for spacecraft momentum management, and the mm329 background sequence. 8,292 command files have been radiated to the spacecraft since launch.

Upcoming Events:

MER-A (Spirit) Entry Descent and Landing (EDL) on 04-004 (1/04/04) followed by an Orbit Synchronization Maneuver to position MGS for the MER-B (Opportunity) arrival.


MSOP-MGS Status Reports for 2000-2003


Mars Surveyor Operations Program

Mars Global Surveyor