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planetoid |
Also found in: Dictionary/thesaurus, Medical, Wikipedia, Hutchinson | 0.06 sec. |
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planetoid: see asteroid asteroid, planetoid, or minor planet, small body orbiting the sun. More than 10,000 asteroids have orbits sufficiently well known to have been cataloged and named; thousands more exist. ..... Click the link for more information. . planetoid [′plan·ə‚tȯid] (astronomy) How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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Another planetoid passing close by might have yanked the moon from Sedna's gravitational grasp. Recently, astronomers reported the surprising discovery of a very large diameter Kuiper Belt planetoid -- (90377) Sedna -- on a distant, 12,500-year-long, eccentric orbit centered approximately 500 astronomical units from the Sun. The temporary name for the frigid planetoid is 2003 VB12, but Brown would like to call it Sedna, after an Inuit sea goddess. |
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