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Upsilon Aquarii : ウィキペディア英語版 | Upsilon Aquarii
Upsilon Aquarii (υ Aqr, υ Aquarii) is the Bayer designation for a binary star〔 in the equatorial constellation of Aquarius. It is a faint naked eye star with an apparent visual magnitude of 5.21.〔 Parallax measurements give a distance estimate of from Earth.〔 This is a high proper-motion star.〔 Upsilon Aquarii is an F-type main sequence star with a stellar classification of F5 V.〔 With an effective temperature of 6,597,〔 it shines with the yellow-white hue of an F-type star.〔 An orbiting companion star was detected in 2007 at the Gemini Observatory.〔 ==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「Upsilon Aquarii」の詳細全文を読む
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