Mars Global Surveyor Status Report 20 Dec 2000
Mars Global Surveyor Status Report
Wednesday, December 20, 2000 (DOY 348/19:00:00 to DOY 355/19:00:00 UTC)
Launch / Days since Launch = Nov. 7, 1996 / 1505 days
Start of Mapping / Days since Start of Mapping = April 1, 1999 / 629 days Total Mapping Orbits = 7,988
Total Orbits = 9,591
Recent Events:
Background Sequences — The spacecraft continues to operate nominally in performing the beta-supplement daily recording and transmission of science data. The mm096 sequence executed successfully from 00-349 (12/14/00) through 00-351 (12/16/00). The mm097 sequence has performed well since it started on 00-352 (12/17/00). It terminates on 00-355 (12/20/00). The mm098 sequence, successfully uplinked on 00-354 (12/19/00), begins executing on 00-356 (12/21/00).
Other — Science Campaign F, which started on 00-345 (12/10/00), finishes tomorrow 00-356 (12/21/00). MGS received 24 hour/day coverage during the campaign, greatly increasing the amount of high resolution real-time science data that it transmitted to Earth. The first of two back-to-back Radio Science Occultation Egress Scan experiments was successfully completed yesterday 00-354 (12/19/00). The second experiment started today and terminates tomorrow 00-356 (12/21/00).
Spacecraft Health:
All subsystems report nominal health.
Uplinks:
There have been 19 uplinks to the spacecraft during the last week, including new star catalogs and ephemeris files, instrument command loads, and the sequences cited above. There have been 5,026 command files radiated to the spacecraft since launch.
Upcoming Events:
The mm099, mm100, mm101, and mm102 background sequences will be uplinked on 00-357 (12/22/00), 00-361 (12/26/00), 00-364 (12/29/00), and 01-002 (01/02/01) respectively. Two Delta Differential One-Way Range (DDOR) experiments will be conducted on 01-009 (1/9/01). Data from these DDOR experiments will assist the Mars Odyssey Program in calibrating the interplanetary navigation system. Radio Science Occultation Egress Scans, scheduled for 01-010 (1/10/01) through 01-011 (01/11/01), will be commanded by the,mz068, & mz069 mini-sequences.
