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Topic: Mesoplanet

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	Britain.tv Wikipedia - Mesoplanet
		Mesoplanet is a term coined by Isaac Asimov to refer to planetary bodies with sizes smaller than Mercury but larger than 1 Ceres.
		Assuming "size"?title=is defined by linear dimension (or by volume), mesoplanets should be approximately 950 km to 4879 km in diameter.
		In 2006 the IAU ratified the classification "dwarf planet"?title=which includes Ceres, all of the mesoplanets, and a not yet determined number of smaller objects.
	www.britain.tv /wikipedia.php?title=Mesoplanet (372 words)

	Mesoplanet - Wikipedia, the free encyclopedia
		Assuming "size" is defined by linear dimension (or by volume), mesoplanets should be approximately 950 km to 4879 km in diameter.
		In 2006 the IAU ratified the classification "dwarf planet" which includes Ceres, all of the mesoplanets, and a not yet determined number of smaller objects.
		On the other hand, the IAU's definition of "dwarf planet" may be enough for such a distinction, and seems less arbitrary than drawing lines at Mercury and Ceres.
	en.wikipedia.org /wiki/Mesoplanet (382 words)

	Blogger: Email Post to a Friend (Site not responding. Last check: 2007-11-05)
		No fewer than three so-called trans-Neptunian objects have been confirmed in the past week, meaning that there could be as few as ten and as many as 12 confirmed planets.
		If we use Isaac Asimov's definition of mesoplanet, this number surges past 20.
		Still, one thing for which no planetary scientists have a very good explanation is the phenomenon of the close-in gas giant which appears to be the most common extrasolar system configuration.
	www.blogger.com /email-post.g?blogID=6087604&postID=112284747235361882 (261 words)

	90377 Sedna - Free net encyclopedia (Site not responding. Last check: 2007-11-05)
		Sedna's discoverers (like others) call it a planetoid, but because the two objects are similar in size and composition, a permanent decision to classify Sedna as a planetoid could re-open questions about whether Pluto should also bear that classification.
		Isaac Asimov suggested the term mesoplanet be used for planetary objects intermediate in size between Mercury and 1 Ceres, which would include both Pluto and Sedna.
		Discovery of a candidate inner Oort cloud planetoid (Brown et.al., submitted to ApJ Letters, 16 March 2004)
	www.netipedia.com /index.php/90377_Sedna (1112 words)

	Tenth Planet Discovered [Archive] - Nuklear Power Forums (Site not responding. Last check: 2007-11-05)
		They concluded that they had discovered additional parts of a long-suggested group of transneptunian objects that put Pluto into perspective -- a region of icy/rocky planetesimals that represents the source of many or most comets.
		Isaac Asimov suggested the term mesoplanet be used for planetary objects intermediate in size between Mercury and Ceres (such as Pluto), but for decades astronomers have used the term planetoid with broadly the same meaning.
		There has been outcry at suggestions that Pluto be reclassified, and the International Astronomical Union officially voted to retain Pluto's classification as a planet.
	forum.nuklearpower.com /archive/index.php?t-11098.html (2875 words)

	Pluto Scorecard
		Our own Moon (3475 km) is larger than Pluto.
		Isaac Asimov was of the opinion that a new term, "mesoplanet," be coined for objects, like Pluto, between the size of Ceres and Mercury.
		Second, Pluto has the highest angle of inclination to the ecliptic and it has the most eccentric orbit of the lot (although Mercury pulls a close second).
	www.bio.aps.anl.gov /~dgore/fun/PSL/plutoscorecard.html (959 words)

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