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Tau2 Serpentis (Tau2 Ser, τ2 Serpentis, τ2 Ser) is a B-type main sequence star in the constellation of Serpens, approximately 430 light-years from Earth. It has an apparent visual magnitude of approximately 6.218.〔 ==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「Tau2 Serpentis」の詳細全文を読む スポンサード リンク
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