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- Xref: sparky alt.folklore.urban:32085 sci.space:18195
- Path: sparky!uunet!vtserf!polaris.async.vt.edu!jfurr
- From: jfurr@polaris.async.vt.edu (J. Furr)
- Newsgroups: alt.folklore.urban,sci.space
- Subject: Re: asteroids beyond Jupiter
- Message-ID: <BzsBE9.ADt@polaris.async.vt.edu>
- Date: 24 Dec 92 22:20:32 GMT
- References: <Bzqq5n.8BF@polaris.async.vt.edu> <1992Dec24.192807.29315@hpcvaac.cv.hp.com>
- Followup-To: sci.space
- Organization: Virginia Center for Lemur Fandom (subscribe to alt.fan.lemurs TODAY)
- Lines: 50
-
- In article <1992Dec24.192807.29315@hpcvaac.cv.hp.com> billn@hpcvaac.cv.hp.com (bill nelson) writes:
- >jfurr@polaris.async.vt.edu (J. Furr) writes:
- >: >: >
- >: >Guess I will have to do some study of the recent research. Do you have some
- >: >cites to simplify my astronomical task?
- >:
- >: Well, yes. I've been trying to get into a library to get actual books to
- >: cite from, but they're all closed here at Va. Tech for the holiday. You
- >: claim that all true asteroids orbit between Mars and Jupiter. Then, I ask
- >: you, what about the asteroids that show up in the papers zooming past
- >: Earth every so often? Every year or so they tell us that another one came
- >
- >No - I never did make such a claim. My definition of asteroid is: any object
- >that originated in the asteroid belt. I claim that such an object could not
- >be captured by a planet - without undergoing a serious kinetic energy loss
- >somewhere.
- >
- >: within a million miles. Furthermore, although the name of the asteroid
- >: class escapes me while I'm unable to get at books, there is a whole class
- >: of asteroids that spends most of their time out around Saturn and beyond,
- >: in highly elliptical orbits that infrequently bring them in nearer the
- >: Sun.
- >
- >Ok, you now have asteroids that have been perturbed out to around the
- >orbit of Saturn. Keep going, you have got 1/3rd the way to Neptune.
- >
- >: Saturn and Jupiter now have so many moons verified as orbiting them
- >: that it's not big news anymore. Each has ten or so tiny rocks that used
- >: to be asteroids orbiting way out. From what I recall reading in astronomy
- >
- >Do you have some documentation for this? I suppose, for Jupiter and Saturn,
- >it might be possible to capture an asteroid - since they have enough moons
- >to possibly cause enough energy loss. However, I am still cynical.
- >
- >: books, some of these will orbit their gas giant for a few million years
- >: and then escape again.
- >
- >Where are they going to get the energy to do so?
- >
- >: Pluto's "moon", however, doesn't strike me as a
- >: likely asteroid capture because Pluto just wouldn't have the gravitational
- >: pull to snag something nearly as large as itself and keep it there.
- >
- >That is not the major problem - the problem is: where would sufficient
- >energy be shed - the same is true for the supposition that Pluto was
- >captured by Neptune.
- >
-
- Bill, I think it's time you take this to sci.space and out of a.f.u. It
- strikes me as more appropriate there.
-