Wednesday, April 26, 2000 (DOY 110/19:00:00 to DOY 117/19:00:00 UTC)
Launch / Days since Launch = Nov 7, 1996 / 1267 days
Start of Mapping / Days since Start of Mapping = April 1, 1999 / 391 days Total Mapping Orbits = 5078
Total Orbits = 6681
Recent Events:
MGS reached the 5000 mapping orbit milestone on 00-111 (4/20/00) at 12:31:55 UTC.
The spacecraft continues to operate nominally in performing the beta supplement daily recording and transmission of science data. The mm032 sequence executed successfully from 00-111 (4/20/00) through 00-114 (4/23/00). The mm033 sequence also successfully executed from 00-115 (4/24/00) through 00-117 (4/26/00). The mm034 sequence was successfully uplinked on 00-116 (4/25/00) and will begin execution on 00-118 (4/27/00). The mz050 mini-sequence, containing the retry of the two missed MOC focus star scans on 4/28 and 4/30, is scheduled for uplink on 00-118 (4/27/00).
Spacecraft Health:
All subsystems are reporting nominal health.
There have been 19 uplinks to the spacecraft during the last week, including new star catalogs and ephemeris files, instrument command loads, and the mm033 and mm034 sequences. Total command files radiated to the spacecraft since launch is 4611.
Upcoming Events:
A bistatic radar experiment, in which the Spacecraft signal will be reflected off the Martian surface to Earth, is on schedule for execution on 5/14/00.
The implementation of the first Radio Science occultation egress scans, replacing the previous fixed-HGA periods for obtaining occultation egress data, is also on schedule for execution on 5/20-5/22/00.