Mars Global Surveyor Status Report 10 Jan 2001
Wednesday, January 10, 2001 (DOY 003/19:00:00 to DOY 010/19:00:00
UTC)
Launch / Days since Launch = Nov. 7, 1996 / 1526 days
Start of Mapping / Days since Start of Mapping = April 1, 1999 / 650 days
Total Mapping Orbits = 8,245
Total Orbits = 9,848
Recent Events:
Background Sequences — The spacecraft continues to operate nominally
in performing the beta-supplement daily recording and transmission of science
data. The mm102 sequence executed successfully from 01-004 (1/4/00) through
01-006 (1/6/01). The mm103 sequence has performed well since it started
on 01-007 (1/7/01). It terminates on 01-010 (1/10/01). The mm104 sequence,
successfully uplinked on 01-009 (1/9/01), begins executing on 01-011 (1/11/01).
Other — Two Delta Differential One-Way Range (DDOR) experiments were
conducted on 01-009 (1/9/01). Data from these DDOR experiments are being
analyzed and should assist the Mars Odyssey Program in calibrating the interplanetary
navigation system.
Spacecraft Health:
All subsystems report nominal health.
Uplinks: There have been 16 uplinks to the spacecraft during the last
two weeks, including new star catalogs and ephemeris files, instrument command
loads, the background sequences cited above, and the mz068 and mz069 mini-sequences.
There have been 5,065 command files radiated to the spacecraft since launch.
Upcoming Events:
The mm105 background sequence will be uplinked on 01-012 (1/12/01).
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.
Another DDOR experiment will be conducted on 01-013 (1/13/01). MOLA Polar
Scans are scheduled for 01-018 (1/18/01) through 01-022 (1/22/01). On 01-025
(1/25/01), a Roll Only Targeted Observation (ROTO) demonstration will be
conducted on the spacecraft. It will verify our readiness to conduct these
observations during the extended mission. Two more DDOR experiments are
scheduled for 01-024 (1/24/01) and 01-027 (1/27/01). 01-031 (1/31/01) will
mark the end of the MGS primary mission and 01-032 (2/1/01) will mark our
entry into the extended mission.
