翻訳と辞書 Words near each other ・ Theusz Hamtaahk ・ Theutbald I (bishop of Langres) ・ Theutbald II (bishop of Langres) ・ Theuville ・ Theuville, Eure-et-Loir ・ Theuville, Val-d'Oise ・ Theuville-aux-Maillots ・ Theux ・ TheV0id ・ Thevakkal ・ Thevalakkara ・ Thevalakkara Chellappan ・ Thevally ・ Thevally Palace ・ Thevannoor ・ Theta Persei ・ Theta Phi Alpha ・ Theta Phi Sigma ・ Theta Pi Sigma ・ Theta Pictoris ・ Theta Piscis Austrini ・ Theta Piscium ・ Theta Pyxidis ・ Theta representation ・ Theta Reticuli ・ Theta rhythm ・ Theta role ・ Theta Sagittae ・ Theta Sagittarii ・ Theta Scorpii 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 Theta Persei ： ウィキペディア英語版 Theta Persei Theta Persei (Theta Per, θ Persei, θ Per) is a star system 37 light years away from Earth, in the constellation Perseus. The primary star is a yellowish dwarf (main sequence) star of spectral type F7V, which is somewhat larger and brighter than our sun, but still within the range considered to have the potential for Earth-like planets. There is also a red dwarf companion of spectral type M1V, orbiting about 250 AU from the primary. The star's age is estimated to be 2.8 billion years but is certainly no less than 1.7 billion years and no greater than 3.9 billion years.〔(Theta Persei (HIP 12777) )〕 Theta Persei is moving through the Galaxy at a speed of 30.5 km/s relative to the Sun. Its projected Galactic orbit carries it between 23,700 and 34,200 light years from the center of the Galaxy.〔 Theta Persei came closest to the Sun 285,000 years ago when it had brightened to magnitude 2.99 from a distance of 21.7 light years.〔 ==References== 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「Theta Persei」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.