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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 42 Draconis b ： ウィキペディア英語版 42 Draconis b 42 Draconis b (sometimes abbreviated 42 Dra b) is an extrasolar planet located approximately 315 light years away in the constellation of Draco, orbiting the 5th magnitude K-type giant star 42 Draconis. It takes 479 days to orbit the star in a 38% eccentricity.〔 This planet was discovered by radial velocity method on March 20, 2009, which was the first day of spring. The planet and its host star is one of the planetary systems selected by the International Astronomical Union as part of their public process for giving proper names to exoplanets and their host star (where no proper name already exists).〔(NameExoWorlds: An IAU Worldwide Contest to Name Exoplanets and their Host Stars ). IAU.org. 9 July 2014〕〔(NameExoWorlds ).〕 The process involves public nomination and voting for the new names, and the IAU plans to announce the new names in mid-November 2015.〔(NameExoWorlds ).〕 ==See also== * HD 139357 b * Iota Draconis b 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「42 Draconis 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.