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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 5 Aquilae ： ウィキペディア英語版 5 Aquilae 5 Aquilae is the Flamsteed designation for a quadruple star〔 system in the constellation Aquila. The combined apparent visual magnitude of the system is 5.9,〔 which means it is faintly visible to the naked eye. With an annual parallax shift of 8.94 mas,〔 the distance to this system is estimated as approximately , albeit with a 13% margin of error. Two of the components of this system, 5 Aquilae Aa and Ab, are Am stars. That is, they are chemically peculiar stars that show unusual abundances of elements other than hydrogen and helium. The two orbit each other with a period lasting 33.65 years at an eccentricity of 0.33. One of these stars is itself a close spectroscopic binary, with a 4.765 day period and a nearly circular orbit that has an eccentricity of just 0.02.〔 The fourth component, 5 Aquilae B, is a magnitude 7.65 F-type main sequence star with a stellar classification of F3 Vm. It is at an angular separation of 12.71 arcseconds from the other members of the system.〔 ==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「5 Aquilae」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.