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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 Kappa Aquilae ： ウィキペディア英語版 Kappa Aquilae Kappa Aquilae (κ Aql, κ Aquilae) is the Bayer designation for a star in the equatorial constellation of Aquila. It is a faint star at apparent visual magnitude +4.957,〔 but bright enough to be seen with the naked eye in dark suburban skies. The annual parallax is only 1.94 mas,〔 which equates to a distance of approximately from Earth (with a 10% margin of error). The spectrum of Kappa Aquilae matches a stellar classification of B0.5 III,〔 where the luminosity class of III is typically associated with evolved giant stars. This is a huge star with 15.50〔 times the Sun's mass and 12.5〔 times the radius of the Sun. Massive stars like this blaze brightly; it is radiating 52,630-fold〔 the Sun's luminosity from its outer atmosphere with a scorching effective temperature of 26,500 K,〔 giving it the intense blue-white glow of a B-type star. It is only 11 million years of age〔 and is spinning rapidly with a projected rotational velocity of 265 km/s.〔 ==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「Kappa 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.