🚀 go-pugleaf

Forwarded from the Mars Observer Project

                         MARS OBSERVER STATUS REPORT
                              January 12, 1993
                                1:00 PM PST

The spacecraft is in Array Normal Spin state and Outer Cruise
configuration and continues to perform as expected.  Teams are continuing
to study the Attitude Control Subsystem miscompared star problem.  An
interim solution has been uplinked and is active, pending approval and
implementation of the permanent fix.

Downlink is via the HGA (High Gain Antenna) at 2 kilobits per second.
Uplink is at 125 bps using the LGA (Low Gain Antenna).

The window for uplink of Flight Software Build 7.1.1 opens at 9:25 PM this
evening (93013 0525 UTC) and closes at 7:55 PM on Friday.  Build 7.1.1
contains changes to AACS (Attitude and Articulation Control Subsystem)
Fault Protection logic determined to be necessary by the Spacecraft Team
and approved by Flight Engineering Office and Project management.
A relatively small number of Flight Software modules are being replaced,
the larger number of modules remaining unchanged.  These changes are not
related to the Celestial Sensor Assembly miscompared star situation.

No stored flight sequences are active.  The next, C6 B, is scheduled to go
active on January 18.

Ka Band Link Experiment (KaBLE) activities will end this evening due to
the Flight Software load.  There are additional KaBLE opportunities
projected for January 16 and 17.

Today the spacecraft is 50,015,515 km from Earth (31,078,200 miles)
travelling at a velocity of 11.55 meters/second (25,829 mph).  One way
light time is approximately 167 seconds.
     ___    _____     ___
    /_ /|  /____/ \  /_ /|     Ron Baalke         | baalke@kelvin.jpl.nasa.gov
    | | | |  __ \ /| | | |     Jet Propulsion Lab |
 ___| | | | |__) |/  | | |__   M/S 525-3684 Telos | Choose a job you love, and
/___| | | |  ___/    | |/__ /| Pasadena, CA 91109 | you'll never have to work
|_____|/  |_|/       |_____|/                     | a day in your life.