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- Xref: sparky sci.astro:13421 alt.sci.planetary:435
- Newsgroups: sci.astro,alt.sci.planetary
- Path: sparky!uunet!gatech!mailer.cc.fsu.edu!geomag!cain
- From: cain@geomag.gly.fsu.edu (Joe Cain)
- Subject: Re: New Planet ?
- Message-ID: <1992Dec25.181540.10098@mailer.cc.fsu.edu>
- Followup-To: sci.astro
- Summary: why not "asteroid?"
- Sender: cain@geomag.gly.fsu.edu
- Nntp-Posting-Host: geomag.gly.fsu.edu
- Organization: Florida State University Geology Dept.
- References: <725192412.AA00896@contrast.wlink.nl>
- Date: Fri, 25 Dec 92 18:15:40 GMT
- Lines: 29
-
- In article <725192412.AA00896@contrast.wlink.nl> jw@contrast.wlink.nl
- (Jan-Willem Stekelenburg) writes: (text greatly abbreviated)
- >
- >>American astronomers have successfully made pictures of a new planet that
- >was discovered in a remote area of our solar system. The planet has a reddish
- >>color and has a diameter of 200 km.
- >>The official name of the object is 1992QB1. It's circling at almost 6 biljon
- >>kilometers distance from our sun. This means 1992QB1 lies just outside of
- >the orbit of Pluto en needs 262 years for a complete circle around the sun.
-
- What are the criteria for using "planet" for such an object? I
- would think that such a small piece of real estate would be called an
- "asteroid".
-
- Except for historical precedent I think that the
- larger member of the binary pair Pluto-Charon does not deserve such a
- designation. Except that it happens to revolve around a much larger
- body it seems to me that Titan is more deserving of such a title.
-
- I heard that the term "world" was beginning to come into favor
- by those involved in the Voyager project(s). Has anyone discussed
- establishing a class of objects that define same which would include
- Titan, Triton, Ganymede, Callisto, Europa.... as well as the primary
- "planets?"
-
- Joseph Cain cain@geomag.gly.fsu.edu
- cain@fsu.bitnet scri::cain
- Department of Geology B-160
- Florida State University
-