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HD 44780 is a star in the Henry Draper Catalogue. It is a spectroscopic binary star,〔 located about 3° north of Mu Geminorum.〔 It is composed of two giant stars, orbiting each other with a period of 577 days. This type of binary system is relatively rare.〔 ==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 44780」の詳細全文を読む スポンサード リンク
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