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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 15 Aquilae ： ウィキペディア英語版 15 Aquilae 15 Aquilae is the Flamsteed designation for a star in the equatorial constellation of Aquila. It has the Bayer designation h Aquilae. The apparent visual magnitude of this star is 5.41,〔 meaning that it is faintly visible to the naked eye. It has a nearby optical companion, HD 177442.〔 The distance to 15 Aquilae can be estimated from its annual parallax shift of 11.27 mas,〔 yielding a range of approximately from Earth with a 9 light-year margin of error. With a stellar classification of K1 III,〔 the spectrum of 15 Aquilae matches a giant star with an estimated age of roughly four billion years.〔 At this stage of its evolution, the outer atmosphere of the star has expanded to 14〔 times the radius of the Sun. It is radiating 83〔 times the Sun's luminosity into space at an effective temperature of 4,560 K.〔 This heat gives it the orange-hued glow of a K-type star.〔 This star is most likely a member of the thin disk population of the Milky Way. It is orbiting through the galaxy with an eccentricity of 0.06, which carries it as close as to the Galactic Core, and as far away as . The orbital inclination carries it no more than from the galactic plane.〔 ==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「15 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.