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21 Aquilae
21 Aquilae is the Flamsteed designation for a star in the equatorial constellation of Aquila. Its apparent magnitude is 5.14〔 and it is located at a distance of around from Earth, give or take a 40 light-year margin of error.〔 The stellar classification of this star is B8 II-III,〔 with the luminosity class of II-III suggesting that the spectrum displays elements of both a giant star and a bright giant. The outer atmosphere has an effective temperature of 13,175 K;〔 this searing heat gives it the blue-white glow of a B-type star.〔 ==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「21 Aquilae」の詳細全文を読む
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