SpaceRef

SpaceRef


Mars Global Surveyor Status Report 5 Mar 2003

Status Report From: Jet Propulsion Laboratory
Posted: Monday, March 10, 2003

  • March 05, 2003 (DOY 057/19:00:00 to DOY 064/19:00:00 UTC)
  • Launch / Days since Launch = Nov. 7, 1996 / 2310 days
  • Start of Mapping / Days since Start of Mapping = April 1, 1999 / 1435 days
  • Total Mapping Orbits = 17,834
  • Total Orbits = 19,517

Recent Events:

Background Sequences - The spacecraft is operating nominally in performing the beta-supplement daily recording and transmission of science data. The mm257 sequence executed successfully from 03-058 (2/27/03) through 03-060 (3/01/03). The mm258 sequence has performed well since it started on 03-061 (3/02/03). It terminates on 03-064 (3/05/03). The mm259 sequence, successfully uplinked on 03-063 (3/04/03), begins executing near the end of day on 03-064 (3/05/03).

Other - Ten Roll Only Targeted Observations (ROTOs) were performed successfully by the mz249 and mz250 mini-sequences. MGS has completed 581 ROTOs to date.

Spacecraft Health:

Spacecraft subsystems report good health and performance. Electrical power margin is being managed by utilizing on-board solar array pointing scripts instead of auto-tracking. On 03-064 (3/05/03), the "three-part motion 25-degree offpoint" scripts replaced the "three-part motion 0-degree offpoint" scripts. This decreases the excess energy being produced by the solar panels thereby preserving life in the Partial Shunt Assemblies.

Uplinks:

There were 19 uplinks to the spacecraft during the past week. They included new star catalog and ephemeris files, nominal instrument command loads, three 25-degree offpoint solar array motion scripts, the mz250 & mz251 ROTO mini-sequences, and the mm258 & mm259 background sequences. 7,456 command files have been radiated to the spacecraft since launch.

Upcoming Events:

ROTOs are planned for the mz251 & mz252 mini-sequences. A Delta-DOR experiment is scheduled for 03-074 (3/15/03). Another Solar Array and HGA Flex Modes Test is scheduled for 03-076 (3/17/03).

// end //

More status reports and news releases or top stories.

Please follow SpaceRef on Twitter and Like us on Facebook.

SpaceRef Newsletter