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HD 208177
HD 208177 is a double star system in the equatorial constellation of Aquarius.〔 They are faintly visible to the naked eye with an apparent magnitude of 6.20.〔 The pair have an angular separation of 19.113″.〔 The primary component is an evolved subgiant star with a stellar classification of F5IV.〔 It has an estimated 163%〔 of the Sun's mass and is about 1.7 billion years old〔 ==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「HD 208177」の詳細全文を読む
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