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- Newsgroups: sci.space
- Path: sparky!uunet!wupost!udel!rochester!cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!roberts@cmr.ncsl.nist.gov
- From: roberts@cmr.ncsl.nist.gov (John Roberts)
- Subject: Re: Asteroids, minor planets
- Message-ID: <Bzqz87.1pu.1@cs.cmu.edu>
- X-Added: Forwarded by Space Digest
- Sender: news+@cs.cmu.edu
- Organization: National Institute of Standards and Technology formerly National Bureau of Standards
- Original-Sender: isu@VACATION.VENARI.CS.CMU.EDU
- Distribution: sci
- Date: Thu, 24 Dec 1992 04:58:50 GMT
- Approved: bboard-news_gateway
- Lines: 37
-
-
- -From: billn@hpcvaac.cv.hp.com (bill nelson)
- -Subject: Re: asteroids beyond Jupiter
- -Date: 23 Dec 92 20:35:36 GMT
- -Organization: Hewlett-Packard Company, Corvallis, Oregon USA
-
- -gwc@csd4.csd.uwm.edu (Greg F Walz Chojnacki) writes:
- -:
- -: Although it might seem like I'm paying out rope here, I'm curious about the
- -: usage of the terms "asteroid" and "planetoid." Bill, since yours is the first
- -: time I saw the distinction made, care to define these? (I hope it's more than
- -: asteroids being those things that lie where asteroids were first discovered.)
-
- -Nope, that is the distinction I use. Whether it is currently the accepted
- -definition is another matter. I define an asteroid to be a body that
- -originated in the asteroid belt - others are planetoids or "minor bodies"
- -or comets etc.
-
- "Of the many thousands of minor planets, the vast majority appear
- telescopically like stars - that is, as small points of light. The term
- *asteroid* (meaning "starlike") is therefore often applied to these tiny
- worlds. Another synonym is *planetoid*. The term *minor planet*, preferred
- by the International Astronomical Union, is used in this text."
-
- from "Exploration of the Universe", by George O. Abell, C. 1964, 1969, 1975.
-
- Actually, I prefer the term *asteroid*. You're welcome to set your own
- definition, then point out that the only things that fit your definition
- are the things that fit your definition, but I don't know how useful
- such a statement is. :-)
-
- There is evidence that some of the things we call asteroids used to be
- comets.
-
- John Roberts
- roberts@cmr.ncsl.nist.gov
-
-