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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 171 Ophelia ： ウィキペディア英語版 171 Ophelia 171 Ophelia is a large, dark Themistian asteroid that was discovered by French astronomer Alphonse Borrelly on January 13, 1877, and named after the fictional character Ophelia in Shakespeare's play ''Hamlet''. This asteroid is a member of the Themis family of asteroids that share similar orbital elements.〔 It probably has a primitive composition, similar to that of the carbonaceous chondrite meteorites. A 1979 study of the Algol-like light curve produced by this asteroid concluded that it was possible to model the brightness variation by assuming a binary system with a circular orbit, a period of 13.146 hours, and an inclination of 15° to the line of sight from the Earth.〔 Photometric observations of this asteroid at the Leura Observatory in Leura, Australia during 2006 gave a rotation period of 6.6666 ± 0.0002 hours and a brightness variation of 0.50 ± 0.02 in magnitude. This is in agreement with previous studies.〔 Ophelia is also the name of a moon of Uranus. ==References== 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「171 Ophelia」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.