Mars Global Surveyor Status Report 4 Sep 2002

Status Report From: Jet Propulsion Laboratory
Posted: Wednesday, September 4, 2002

Wednesday, September 04, 2002 (DOY 240/19:00:00 to DOY 247/19:00:00 UTC)

  • Launch / Days since Launch = Nov. 7, 1996 / 2128 days
  • Start of Mapping / Days since Start of Mapping = April 1, 1999 / 1253 days
  • Total Mapping Orbits = 15,607
  • Total Orbits = 17,290

Recent Events:

Background Sequences - The spacecraft is operating nominally in performing the beta-supplement daily recording and transmission of science data. The mm205 sequence executed successfully from 02-241 (8/29/02) through 02-243 (8/31/02). The mm206 sequence has performed well since it started on 02-244 (9/01/02). It terminates on 02-247 (9/04/02). The mm207 sequence, successfully uplinked on 02-246 (9/03/02), begins executing near the end of day on 02-247 (9/04/02).

Other - Five Roll Only Targeted Observations (ROTOs) were performed successfully by the mz196 & mz197 minisequences. MGS has completed 296 ROTOs to date.

A DSN Network Simplification Project (NSP) tracking test was performed on 02-242 (8/30/02).

A Delta Differential One-Way Range (DDOR) experiment was performed on 02-246 (9/03/01). Data from DDOR experiments are helpful in calibrating the interplanetary navigation system.

Spacecraft Health:

Spacecraft subsystems report good health and status.


There have been 8 uplinks to the spacecraft during the past week, including instrument command loads, the mz197 ROTO mini-sequence, and the mm206 and mm207 background sequences. 6,987 command files have been radiated to the spacecraft since launch.

Upcoming Events:

ROTOs are planned for next week in the mz198 and mz199 mini-sequences.

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