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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Ophelia (moon) ： ウィキペディア英語版 Ophelia (moon) Ophelia ( ) is a moon of Uranus. It was discovered from the images taken by ''Voyager 2'' on January 20, 1986, and was given the temporary designation S/1986 U 8.〔 It was not seen until the Hubble Space Telescope recovered it in 2003.〔〔 Ophelia was named after the daughter of Polonius, Ophelia, in William Shakespeare's play ''Hamlet''. It is also designated Uranus VII.〔 Other than its orbit,〔 radius of 21 km〔 and geometric albedo of 0.08〔 virtually nothing is known about it. At the Voyager 2 images Ophelia appears as an elongated object, the major axis pointing towards Uranus. The ratio of axes of the Ophelia's prolate spheroid is 0.7 ± 0.3.〔 Ophelia acts as the outer shepherd satellite for Uranus' Epsilon ring.〔 The orbit of Ophelia is within the synchronous orbit radius of Uranus, and therefore the moon is slowly decaying due to tidal forces.〔 == See also == * Moons of Uranus 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Ophelia (moon)」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.