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Nu Gruis is a double star in the constellation Grus. Its apparent magnitude is 5.48. Located around distant, the primary is a red giant of spectral type G9III, a star that has used up its core hydrogen and is expanding. The secondary's apparent magnitude is 12.5, not visible even through binoculars. ==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「Nu Gruis」の詳細全文を読む スポンサード リンク
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