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MY Camelopardalis (MY Cam) is a binary star system located in the Alicante 1 open cluster, some away in the constellation Camelopardalis. It is one of the most massive known binary star systems.〔 〕 MY Cam is the brightest star in Alicante 1.〔 〕 The system consists of two hot blue O-type stars with one component having a mass of 32 solar masses and the other 38 solar masses.〔 〕 MY Cam is a contact binary and eclipsing binary, with an orbital period of 1.2 days, and an orbital velocity of .〔 They were likely formed 2 million years ago.〔 〕〔 〕 The system is anticipated to merge to form a single massive star of about 60 solar masses. This is expected to be the way that most extremely massive single stars are formed.〔 When originally discovered, the system was considered to be a single variable star and not a binary system.〔 Its binary nature was only discerned in 2004.〔 ==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「MY Camelopardalis」の詳細全文を読む スポンサード リンク
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