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- From: baalke@kelvin.jpl.nasa.gov (Ron Baalke)
- Subject: Mars Observer Update - 12/28/92
- Message-ID: <1992Dec28.174738.14219@news.arc.nasa.gov>
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- Keywords: Mars Observer, JPL
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- Organization: Jet Propulsion Laboratory
- Date: Mon, 28 Dec 1992 17:46:00 GMT
- Approved: sci-space-news@ames.arc.nasa.gov
- Lines: 47
-
- Forwarded from the Mars Observer Project
-
- MARS OBSERVER STATUS REPORT
- December 28, 1992
- 10:00 AM PST
- Launch +94 Days
-
- The Spacecraft Team reports that spacecraft subsystems and instruments
- are performing nominally. The spacecraft is in Array Normal Spin state;
- the downlink data rate is at 250 bps while the uplink data rate is 125 bps.
-
- C5 A execution began on December 19. C5 is the outer cruise transition
- sequence which is marked by the spacecraft attitude being changed from
- an off sun orientation to direct pointing at Earth. The planned C5 execution
- completion date is January 4, 1993.
-
- Stored sequence activities are at a minimum for the next several days.
- The Inner/Outer Cruise transition star catalog/ephemeris is scheduled to
- be uplinked January 2. The Flight Sequence C5 B load will be uploaded on
- January 3. The High Gain Antenna "Use" command is scheduled to be sent
- on January 4.
-
- Mission Operations is planning to send interactive commands to power on
- and power off several subsystem heaters this week; no instrument
- commanding is involved. This is being done to dissipate an excessive
- power build up which resulted from last week's sun-coning. The acting
- Mission Manager and Spacecraft Team are meeting this morning to review
- this strategy and to plan command approval meetings as necessary.
-
- The MOC (Mars Observer Camera) "bakeout", which was earlier scheduled to
- end today, is now planned to continue into C6 through January 14. The
- MOC Instrument Team agreed to this Spacecraft Team requested change to help
- with excess power dissipation. The January 14 MOC heater power off date
- allows 4 days for the instrument to return to equilibrium for the scheduled
- January 18 focus test.
-
- Today the spacecraft is 36,744,962 km (22,832,261 miles) from Earth,
- traveling at a velocity of 9.0877 kilometers per second (20,328 miles per
- hour) with respect to Earth. One way light time is approximately 123
- 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.
-
-