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51 Aquilae
51 Aquilae is the Flamsteed designation for a star in the equatorial constellation of Aquila. It has an apparent visual magnitude of 5.39,〔 which means it is faintly visible to the naked eye. Based upon an annual parallax shift of 35.88 mas,〔 the distance to this star is around . This is an F-type main sequence star with a stellar classification of ;〔 where the 'Fe-1' and 'CH-0.7' represent abundance deficiencies of iron and the molecule CN, respectively. It is about 1.6〔 billion years old and is spinning relatively quickly with a projected rotational velocity of 77.5 km/s.〔 The outer atmosphere has an effective temperature of 6,812 K,〔 giving it the yellow-white hue characteristic of an F-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「51 Aquilae」の詳細全文を読む
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