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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 ： ウィキペディア英語版 42 Draconis 42 Draconis (sometimes abbreviated 42 Dra) is a 5th magnitude K-type giant star located approximately 315 light years away in the constellation of Draco. The star has mass similar to our Sun but its radius is 22 times greater. It is a metal-poor star with metallicity as low as 35% that of our Sun and its age is 9.49 billion years. In 2009, this star was found to have a super-Jupiter in orbit around it. 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 ).〕 == Pole star == 42 Draconis is the northern pole star of Venus. 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」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.