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1994-04-07
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Magellan status 4/5/94
PUBLIC INFORMATION OFFICE
JET PROPULSION LABORATORY
CALIFORNIA INSTITUTE OF TECHNOLOGY
NATIONAL AERONAUTICS AND SPACE ADMINISTRATION
PASADENA, CALIF. 91109. TELEPHONE (818) 354-5011
MAGELLAN STATUS REPORT
April 5, 1994
Magellan Project engineers Monday began trim maneuvers for
the Magellan spacecraft to bring it into a more circular orbit
about Venus. Magellan is in its fifth 243-day cycle, currently
studying the planet's gravity. A cycle is one rotation of Venus
on its axis. The spacecraft begins a sixth orbital cycle on
April 14.
The trim maneuvers Monday were to raise Magellan's
periapsis, or its closest point to the planet, and then to lower
its apoapsis or most distant point from the current 528-kilometer
(327-mile) distance to 400 kilometers (245 miles). Orbit trim
maneuvers to lower apoapsis were scheduled for today, and again
for April 11 and 12.
Periapsis will be stabilized at 220 kilometers (136 miles),
and those values will be held until August when the last high-
resolution gravity data will be taken, mostly over the polar
regions of Venus.
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■ Via FTL BBS (404-292-8761) and NASA Spacelink (205-895-0028)