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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 Psi² Aquarii ： ウィキペディア英語版 Psi2 Aquarii Psi2 Aquarii is the Bayer designation for a star in the equatorial constellation of Aquarius. It is visible to the naked eye with an apparent visual magnitude of 4.4.〔 Based upon parallax measurements made during the Hipparcos mission, the distance to this star is roughly .〔 This is a B-type main sequence star with a stellar classification of B5 Vn.〔 The 'n' suffix indicates that the absorption lines in the spectrum are being broadened by Doppler shift from the star's rapid rotation rate. The projected rotational velocity of the star is 341 km/s.〔 Psi2 Aquarii is 4.6〔 times as large as the Sun with an effective temperature of 15,212 K〔 in its outer envelope. It is a Lambda Eridani or periodic Be star with a pulsation cycle lasting 1.073 days.〔 The amplitude of the variation is 0.024 in magnitude.〔 ==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「Psi2 Aquarii」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.