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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク 23 Ursae Majoris ： ウィキペディア英語版 23 Ursae Majoris 23 Ursae Majoris, or 23 UMa, is a binary star system in the constellation Ursa Major. It is approximately 75.5 light years from Earth. The primary component is a yellow-white F-type subgiant with an apparent magnitude of +3.65. It has 2.9 times the Sun's radius and is emitting 15 times the luminosity of the Sun.〔 Orbiting at an angular separation of 22.7 arcseconds is the 9th magnitude secondary companion. There is a magnitude +10.5 optical companion at an angular separation of 99.6 arcseconds. With φ, υ, θ, τ, e, and f, it composed the Arabic asterism ''Sarīr Banāt al-Na'sh'', the Throne of the daughters of ''Na'sh'', and ''al-Haud'', the Pond, ==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「23 Ursae Majoris」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.