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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 Kapteyn b ： ウィキペディア英語版 Kapteyn b Kapteyn b is a possible exoplanet that orbits the red dwarf Kapteyn's star, located approximately from Earth. Kapteyn b is within the estimated habitable zone of its star.〔 It is the closest suspected habitable exoplanet to our solar system other than Tau Ceti e. However, later research has cast doubt on the existence of Kapteyn b, suggesting the signal is consistent with stellar activity rather than a planet. Kapteyn b has a mass greater than or equal to  M⊕ and is 0.168AU from the host star orbiting in 48.61 days with an eccentricity of . The system itself is estimated to be 11.5 billion years old, substantially older than the Solar System.〔 ==Discovery== The planet was first discovered by the HARPS spectrometer which is housed at the European Southern Observatory's La Silla Observatory in Chile. Further confirmations of the planetary detection where made at the Keck Observatory in Hawaii and at the PFS Observatory, also in Chile.〔 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「Kapteyn b」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.