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planetoid

   Also found in: Dictionary/thesaurus, Medical, Wikipedia, Hutchinson 0.04 sec.
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.
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Another planetoid passing close by might have yanked the moon from Sedna's gravitational grasp.
The moon that isn't there by Cowen, R. / Science News
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.
SwRI Researchers Show Giant Kuiper Belt Planetoid Sedna May Have ... by Business Wire
The temporary name for the frigid planetoid is 2003 VB12, but Brown would like to call it Sedna, after an Inuit sea goddess.
Far out by Junior Scholastic
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