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- Newsgroups: sci.space
- Path: sparky!uunet!zaphod.mps.ohio-state.edu!rpi!batcomputer!cornell!uw-beaver!micro-heart-of-gold.mit.edu!eddie.mit.edu!allegra!rfc
- From: rfc@allegra.att.com (Robert F. Casey)
- Subject: Re: asteroids beyond Jupiter, capture by planets?
- Message-ID: <1993Jan4.185123.10069@allegra.att.com>
- Organization: AT&T Bell Laboratories, Murray Hill, NJ
- References: <BzuECq.8LD@news.udel.edu> <1992Dec26.044926.29682@hpcvaac.cv.hp.com> <BzuuwB.9Cq@news.udel.edu>
- Date: Mon, 4 Jan 1993 18:51:23 GMT
- Lines: 18
-
- In article <BzuuwB.9Cq@news.udel.edu> bjacobs@chopin.udel.edu (William J Jacobs) writes:
- >>Now, could an asteriod which is perturbed out to the orbit of Neptune, be
- >>captured by that planet? If so, what would cause the energy loss that would
- >>be needed to put it into orbit? I doubt if atmospheric braking would do
- >>the trick.
- >>
- >>Bill
- >>
- >There aren't many other options. To lose energy, you need to knock into
- >something. You have the choice of lots of little things (the atmosphere) or
- >one big thing (Neptune itself). But I'm really no expert on orbital mechanics,
- >so I'll some physics jock give more details (should be plenty of folks who
- >know here in sci.space).
- >
- Maybe if the planet has a more massive moon that the asteroid can shed
- energy to, thus allowing it to slow down enough to get captured? The
- preexisting moon would get to orbit further out, using that newly acquired
- energy? I don't mean a collision, but just gravitational interactions.
-