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- From: rcs@cs.arizona.edu (Richard Schroeppel)
- Newsgroups: sci.space
- Subject: relocating planets
- Message-ID: <C03KqG.86p.1@cs.cmu.edu>
- Date: 31 Dec 92 00:15:32 GMT
- Article-I.D.: cs.C03KqG.86p.1
- Sender: news+@cs.cmu.edu
- Distribution: sci
- Organization: [via International Space University]
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-
- There's no need for the nuclear reactors to move Ceres.
- You can use a much smaller asteroid to tranfer angular momentum & energy
- between Ceres & (say) Vesta. Ceres needs to be moved only enough to
- either approach Mars, or a resonance with Jupiter; probably the resonance
- is closer. And, of course, the smaller asteroid could be manipulated
- with a still smaller asteroid, etc. The same scheme could be used to
- eject Ganymede from its orbit around Jupiter, giving you a larger working
- mass. Of course, the tides from even a Ceres close approach might be
- a problem: Assuming Ceres's mass is 1/8 that of the moon, it would cause
- equivalent tides at 1/2 the Lunar distance, ~ 30 Earth radii. If it
- passes at 1 Er, that's 27000 times the tidal force. Could be fun to
- watch, from a safe distance.
-
- Wrt accurate gravity measurement & orbit prediction, I'd guess that the
- uncertainty principle is the greatest problem; you can't know Ceres
- position & velocity accurately enough to predict more than (say) 100
- encounters ahead. The steering rockets would have to be capable of
- influence exceeding hbar; pea shooters would do.
-
- Rich Schroeppel rcs@cs.arizona.edu
-