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Upsilon Orionis : ウィキペディア英語版 | Upsilon Orionis
Upsilon Orionis (υ Ori, υ Orionis) is a star in the constellation Orion. It has the traditional name Thabit (ﺛﺎﺑﺖ, Arabic for "the endurer"). It is a blue-white main sequence star of apparent magnitude 4.62 located over 3000 light-years distant from our Solar System. It is a suspected Beta Cephei variable. ==Name== Located south of Iota Orionis, Upsilon Orionis is one of two stars (the other, 29 Orionis) marking the top of Orion's right boot in Johann Bayer's ''Uranometria'' (1603). It was given the number 36 by John Flamsteed, while its proper name appears to be derived from the Arabic ''Al Thabit'' "the endurer".〔 In his ''Star-Names and Their Meanings'' (1899), American amateur naturalist Richard Hinckley Allen noted that the name appeared on the star atlas ''Geography of the Heavens'', composed by Elijah Hinsdale Burritt, but its ultimate origin was unknown.
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