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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 Mu Geminorum ： ウィキペディア英語版 Mu Geminorum Mu Geminorum (μ Gem, μ Geminorum) is the Bayer designation for a star in the northern constellation of Gemini. It has the traditional name Tejat Posterior, which means ''back foot'', because it is the foot of Castor, one of the Gemini twins. This name was formerly applied to an asterism consisting of this star, along with γ Gem (Alhena), ν Gem, η Gem (Tejat Prior), and ξ Gem (Alzirr). The names Calx (Latin, meaning ''heel''), Pish Pai (from the Persian ''Pīshpāy'', پیش‌پای, meaning ''foreleg''), and Nuhatai (from Arabic ''Al Nuḥātai'', the dual form of ''Al Nuḥāt'', "a Camel's Hump") have also been applied to Mu Geminorum.〔〔〔(Astronomers Predict Eclipse of Naked-Eye Star by an Asteroid Monday Morning, Nov. 20 ) at Spaceref.com.〕 In Chinese, (), meaning ''Well (asterism)'', refers to an asterism consisting of μ Geminorum, γ Geminorum, ν Geminorum, ξ Geminorum, ε Geminorum, 36 Geminorum, ζ Geminorum and λ Geminorum.〔 ''中國星座神話'', written by 陳久金. Published by 台灣書房出版有限公司, 2005, ISBN 978-986-7332-25-7.〕 Consequently, μ Geminorum itself is known as (, (英語:the First Star of Well).)〔 (香港太空館 - 研究資源 - 亮星中英對照表 ), Hong Kong Space Museum. Accessed on line November 23, 2010.〕 ==Properties== Mu Geminorum has an average apparent visual magnitude of 2.9,〔 which makes it the fourth brightest member of Gemini. From parallax measurements made during the Hipparcos mission, the distance to this star is roughly .〔 Its visual magnitude is diminished by 0.07 as a result of extinction from intervening gas and dust.〔 This star is a slow irregular variable of type LB. Its brightness varies between magnitude +2.75 and +3.02 over a 72-day period, along with a 2,000 day period of long term variation. It is a red giant at a stellar classification of M3 III,〔 with a surface temperature of 3,773 K,〔 meaning it is brighter, yet cooler than our Sun.〔〔 The star is currently on the asymptotic giant branch and is generating energy through the nuclear fusion of hydrogen and helium along concentric shells surrounding an inert core of carbon and oxygen.〔 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「Mu Geminorum」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.