翻訳と辞書 Words near each other ・ Psych (season 8) ・ Psych 9 ・ Psych Central ・ Psych Onation ・ Psych Out ・ Psych-Out ・ Psychagogy ・ Psychagrapha ・ Psychai ・ PSR ・ PSR B0329+54 ・ PSR B0943+10 ・ PSR B0950+08 ・ PSR B1257+12 ・ PSR B1257+12 A ・ PSR B1257+12 B ・ PSR B1257+12 C ・ PSR B1259-63/LS 2883 ・ PSR B1509-58 ・ PSR B1620-26 ・ PSR B1620-26 b ・ PSR B1828-11 ・ PSR B1829−10 ・ PSR B1913+16 ・ PSR B1919+21 ・ PSR B1937+21 ・ PSR J0108-1431 ・ PSR J0348+0432 ・ PSR J0357+3205 ・ PSR J0437-4715 Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク PSR B1257+12 B ： ウィキペディア英語版 PSR B1257+12 B PSR B1257+12 c (ex PSR B1257+12 B) is an extrasolar planet (approximately 980 light-years away) in the constellation of Virgo (the Virgin). PSR B1257+12B was the first planet ever discovered outside the Solar System, and is one of three objects known to be orbiting the pulsar PSR B1257+12, which it circles at a distance of 0.36 AU with an orbital period of approximately 66 days. The planet is over four times as massive as the Earth. Because planet B and planet C have very similar masses (as well as orbiting close to each other), they cause measurable perturbations in each other's orbits. As expected, perturbations were detected confirming that the planets were real. Accurate masses of the two planets, as well as their inclinations, were measured by calculating how much the planets interfere with each other. ==Name== The planets of PSR B1257+12 are designated from A to D (ordered by increasing distance). The reason that these planets have different naming conventions from other extrasolar planets is because the naming conventions differed at the time of their discovery. Being the first ''ever'' exoplanets discovered, and being discovered around a pulsar, the planets were given the uppercase letters "B" and "C." When a third planet was later discovered around the system (in a closer orbit than the other two), the name "A" was used. 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 ).〕 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「PSR B1257+12 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.