Magellan Significant Events for Week Ending 02/25/94

*1.  The Magellan spacecraft continues high-resolution gravity data acquisition
and is performing nominally.

2.  Spacecraft subsystem temperatures have increased due to decreasing solar
occultations and turning on of the radar heaters: CDS Bay 7 is at 31xC, cycling
6xC per orbit; transmitter B at 45xC; and gyro A2 at 53.7xC.

*3.  On Monday the Mission Operations Working Group developed a science plan
for the remainder of the mission.  This plan was approved by the Project
Science Group at its meeting at JPL on Tuesday, February 22nd.

4.  In addition to constant gravity data collection through September, the
science plan calls for two Orbital Trim Maneuvers (OTM) on March 10th to lower
periapsis by 22 km in order to provide better aeronomy data.  In April the
apoapsis will be lowered approximately 150 km to improve gravity data
collection at apoapsis.  Better apoapsis data is desired since periapsis is in
Earth occultation from April through August.

5.  Two bistatic experiments will be performed in late May/early June along
with two radio occultation experiments during the summer.

*6.  A final decision for the mission-ending experiment and ending state of the
spacecraft is still pending, but the final experiments will be tailored to
assist the aerobraking design considerations for the Mars Geoscience Surveyor
mission.

7.  The quarterly Spacecraft Team Technical Interchange Meeting was held at JPL
on Wednesday and provided a summary of the spacecraft health and the activities
accomplished.

Events Expected Next Week:

1.  Routine circular orbit operations are expected to continue.
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  Via FTL BBS (404-292-8761) and NASA Spacelink (205-895-0028)
