National Aeronautics and Space Administration Logo
Follow this link to skip to the main content NASA Banner
Solar System Exploration
News & Events
Mars Global Surveyor Status Report
Mars Global Surveyor Status Report
19 Sep 2001
(Source: Jet Propulsion Laboratory)

(DOY 255/19:00:00 to DOY 262/19:00:00 UTC)

Launch / Days since Launch = Nov. 7, 1996 / 1778 days
Start of Mapping / Days since Start of Mapping = April 1, 1999 / 902 days
Total Mapping Orbits = 11,327
Total Orbits = 13,010

Recent Events:

Background Sequences - The spacecraft is operating nominally in performing daily recording and transmission of science data. The mm153 sequence has performed well since it started 01-156 (9/13/01). It terminates on 01-290 (10/17/01).

Other - MOLA Diagnostic Test #4 was performed on 01-256 (9/13/01). The MOLA team is in the process of analyzing the resulting data.

Roll Only Targeted Observations (ROTO) were temporarily suspended pending investigation of the C-Mode entry root cause. MGS entered C-Mode on 9/6/01 because the STAREX star processing software could not converge on a good inertial attitude following a ROTO. The ROTO did not cause the C-Mode entry, but STAREX performance may impact how we perform ROTOs in the future. MGS has completed 198 ROTOs to date.

Spacecraft Health:

All subsystems report good health and status. The spacecraft team continues to investigate the STAREX anomaly that caused the 9/6/01 C-Mode entry. The MOLA instrument team is still investigating the MOLA anomaly of 01-181 (6/30/01). The MOC instrument required a hardware reboot to recover from an anomaly that temporarily prevented it from returning properly formatted science data.


There have been 28 uplinks to the spacecraft during the past week, including new star catalogs and ephemeris files, TES instrument turn-on, MOC instrument re-boots, and standard instrument command loads. 5,755 command files have been radiated to the spacecraft since launch.

Upcoming Events:

Delta-DOR experiments are scheduled for 01-267 (9/24/01) and 01-269 (9/26/01).

News Archive Search  Go!
Show  results per page
Awards and Recognition   Solar System Exploration Roadmap   Contact Us   Site Map   Print This Page
NASA Official: Kristen Erickson
Advisory: Dr. James Green, Director of Planetary Science
Outreach Manager: Alice Wessen
Curator/Editor: Phil Davis
Science Writers: Courtney O'Connor and Bill Dunford
Producer: Greg Baerg
Webmaster: David Martin
> NASA Science Mission Directorate
> Budgets, Strategic Plans and Accountability Reports
> Equal Employment Opportunity Data
   Posted Pursuant to the No Fear Act
> Information-Dissemination Policies and Inventories
> Freedom of Information Act
> Privacy Policy & Important Notices
> Inspector General Hotline
> Office of the Inspector General
> NASA Communications Policy
> NASA Advisory Council
> Open Government at NASA
Last Updated: 24 Sep 2001