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Kappa Cephei : ウィキペディア英語版 | Kappa Cephei
Kappa Cephei (κ Cep) is a binary star in the constellation Cepheus. Its apparent magnitude is 4.395. Located approximately distant,〔 the primary is a blue giant of spectral type B9III,〔 a star that has used up its core hydrogen and is likely expanding to become a supergiant. The secondary is a main sequence star of spectral type A7V. It has an apparent magnitude of 8.34 and lies 7.38 arc seconds distant.〔()〕 ==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 Cephei」の詳細全文を読む
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