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Omega Ursae Majoris : ウィキペディア英語版 | Omega Ursae Majoris
Omega Ursae Majoris (Omega UMa, ω Ursae Majoris, ω UMa) is a binary star in the constellation Ursa Major. It is approximately 267 light years from Earth. Omega Ursae Majoris is a spectroscopic binary which is classified as a white A-type main sequence dwarf with an apparent magnitude of +4.66. The binary system has an orbital period of 15.8 days. ==Naming== In Chinese, (), meaning ''Celestial Prison'', refers to an asterism consisting of ω Ursae Majoris, 57 Ursae Majoris, 47 Ursae Majoris, 58 Ursae Majoris, 49 Ursae Majoris and 56 Ursae Majoris. Consequently, ω Ursae Majoris itself is known as (, (英語:the First Star of Celestial Prison).).〔 (AEEA (Activities of Exhibition and Education in Astronomy) 天文教育資訊網 2006 年 6 月 21 日 )〕
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「Omega Ursae Majoris」の詳細全文を読む
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