home *** CD-ROM | disk | FTP | other *** search
- Xref: sparky sci.space:16196 sci.astro:12261 alt.sci.planetary:343
- Newsgroups: sci.space,sci.astro,alt.sci.planetary
- Path: sparky!uunet!elroy.jpl.nasa.gov!kelvin.jpl.nasa.gov!baalke
- From: baalke@kelvin.jpl.nasa.gov (Ron Baalke)
- Subject: Mars Observer Update - 11/20/92
- Message-ID: <1992Nov20.232944.8345@elroy.jpl.nasa.gov>
- News-Software: VAX/VMS VNEWS 1.3-4
- Keywords: Mars Observer, JPL
- Sender: news@elroy.jpl.nasa.gov (Usenet)
- Nntp-Posting-Host: kelvin.jpl.nasa.gov
- Reply-To: baalke@kelvin.jpl.nasa.gov
- Organization: Jet Propulsion Laboratory
- Date: Sat, 21 Nov 1992 07:29:39 GMT
- Lines: 46
-
- Forwarded from:
- PUBLIC INFORMATION OFFICE
- JET PROPULSION LABORATORY
- CALIFORNIA INSTITUTE OF TECHNOLOGY
- NATIONAL AERONAUTICS AND SPACE ADMINISTRATION
- PASADENA, CALIF. 91109. TELEPHONE (818) 354-5011
-
- MARS OBSERVER MISSION STATUS
- November 20, 1992
-
- All spacecraft subsystems are performing well.
-
- A new flight sequence, primarily dedicated to radio science
- activities, began on Nov. 17 and will continue through Dec. 14.
- Checkout of the Thermal Emission Spectrometer and completion of
- the Laser Altimeter checkout were performed last week. The Mars
- Observer Camera "bakeout" to prepare the instrument for operation
- continues through Dec. 28.
-
- The second trajectory correction maneuver (TCM-2) has been
- rescheduled for Feb. 8, 1993, to allow engineers time to upgrade
- on-board flight software. TCM-3 has also been rescheduled for
- March 8, 1993.
-
- Until now, the spacecraft's solar panels have been oriented
- at a 60-degree sun incidence angle to prevent excess power caused
- by the solar array's direct exposure to the sun. A star-
- ephemiris table was uploaded on Nov. 17, decreasing the sun
- incidence angle by 5 degrees. These periodic changes will occur
- about once a week through Jan. 2, 1993, and will cause the
- spacecraft's high-gain antenna to point directly at Earth.
-
- Today the spacecraft is about 16 million kilometers (10
- million miles) from Earth, traveling at a speed of about 14,500
- kilometers per hour (9,000 miles per hour) relative to Earth.
- The spacecraft is traveling at a heliocentric velocity of about
- 111,500 kilometers per hour (70,000 miles per hour).
-
- #####
- ___ _____ ___
- /_ /| /____/ \ /_ /| Ron Baalke | baalke@kelvin.jpl.nasa.gov
- | | | | __ \ /| | | | Jet Propulsion Lab |
- ___| | | | |__) |/ | | |__ M/S 525-3684 Telos | Learn to recognize the
- /___| | | | ___/ | |/__ /| Pasadena, CA 91109 | inconsequential, then
- |_____|/ |_|/ |_____|/ | ignore it.
-
-