翻訳と辞書 Words near each other ・ U of M Transitway ・ U of N ・ U of O ・ U of P ・ U of Q ・ U of R ・ U of S ・ U of S Lands South Management Area, Saskatoon ・ U of T ・ U of U ・ U of V ・ U of W ・ U of Z ・ U ogledalu ・ U oluji ・ U Orionis ・ U osvit zadnjeg dana ・ U Ottama ・ U Pandita ・ U pokladny stál... ・ U Ponnya ・ U pěti veverek ・ U R Man ・ U R My Jaan ・ U raskoraku ・ U Razak ・ U Remind Me ・ U ritmu srca malog dobošara ・ U road ・ U Saved Me 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 U Orionis ： ウィキペディア英語版 U Orionis U Orionis (abbreviated U Ori) is a Mira-type variable star in the constellation Orion. It is a classical long period variable star that has been well observed from the United Kingdom for over 120 years. It was discovered on 1885 December 13 by J.E. Gore and initially it was thought to be a nova in the early stages of decline (''Gore's Nova'' and ''NOVA Ori 1885'' as still listed in SIMBAD), but a spectrum taken at Harvard showed features similar to that of Mira. Thus U Orionis became the first long period variable to be identified by a photograph of its spectrum. ==Stellar parameters== The star has a very low effective temperature (roughly 2700 K) but a very large and bloated radius of 370 solar radii〔 and a high luminosity, 7,000 times higher than the Sun.〔 If our Sun were replaced with U Orionis, its radius would extend beyond Mars's orbital zone (about 1.7 astronomical units), and, to be habitable with water at liquid state and a comfortable temperature, a planet would have to be located within 85 AU, within the Kuiper belt's orbital zone. 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「U Orionis」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.