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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 List of extremes in the sky ： ウィキペディア英語版 List of extremes in the sky This article describes some extremes in the sky as a textual addition to the list of star extremes page. ==Brightness== The brightest star in the sky as to be observed from Earth is the Sun with a stellar magnitude of -26.7. When counting objects outside the solar system it is Sirius in the constellation of the Greater Dog with magnitude -1.45 and lies in the celestial southern hemisphere. The brightest star in the northern celestial hemisphere is Arcturus in Bootes with a magnitude of -0.03. The faintest stars visible to the naked eye are of magnitude +6.3 in good conditions but may vary from +3 in heavily light polluted city centers to +7.5 in excellent Bortle 0 skies and good visual acuity. The brightest star in absolute magnitude is S Doradus with an absolute magnitude of -9.9 which is about 700 000 times brighter than the Sun. Of the first magnitude stars (brighter than +1.5) it is Deneb with -8.4 which equals 170 000 Suns. 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「List of extremes in the sky」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.