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- Newsgroups: sci.space
- Path: sparky!uunet!well!collins
- From: collins@well.sf.ca.us (Steve Collins)
- Subject: Re: Mars Observer Update - 01/12/93
- Message-ID: <C0rzuB.M3t@well.sf.ca.us>
- Keywords: Mars Observer, JPL
- Sender: news@well.sf.ca.us
- Organization: Whole Earth 'Lectronic Link
- References: <12JAN199321480309@kelvin.jpl.nasa.gov> <1993Jan12.223919.23926@aio.jsc.nasa.gov>
- Date: Wed, 13 Jan 1993 04:44:35 GMT
- Lines: 16
-
-
- At this time, MO is far enough from both Earth and Mars, that they don't
- exert signifigant gravitional influence. The big player is the Sun. I am
- not sure what the reference frames are for Ron's velocity, but I know that
- in sun centered frame, MO is slowing down. The Earth is passing MO on the
- inside so the increase in velocity may be an artifact of the relative motion
- of the earth and spacecraft.
- The NAV team worries about the effects of all the planets on the trajectory
- and
- even includes forces from solar radiation pressure. I am told that on
- voyager, they can see the effects of the force generated by the
- infrared radiation emitted by the spacecraft's Plutonium RTG power source.
-
- Steve Collins, MO Spacecraft Team (AACS)
- ~rkO
- w3t(.
-