翻訳と辞書 Words near each other ・ Thu Kamkasomphou ・ Thu Maung ・ Thu Minh ・ Thu Tran ・ Thu Zar ・ Thu, Palpa ・ Thua Kheda ・ Thuam Hang ・ Thuamul Rampur ・ Thuan Thanh No 1 High School ・ Thuan Thien ・ Thuan Tong ・ Thuarea ・ Thub Jagir ・ Thubactis Radio and Television ・ Thuban ・ Thubana ・ Thubana albisignis ・ Thubana deltaspis ・ Thubana dialeukos ・ Thubana felinaurita ・ Thubana leucosphena ・ Thubana xanthoteles ・ Thuborough ・ Thubron ・ Thubten ・ Thubten Chodron ・ Thubten Choekyi Nyima, 9th Panchen Lama ・ Thubten Chökyi Dorje, 5th Dzogchen Rinpoche ・ Thubten Dhargye Ling 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 Thuban ： ウィキペディア英語版 Thuban Thuban ((アラビア語:ثعبان), ', "snake"), also known by its Bayer designation Alpha Draconis (α Draconis, α Dra), is a star (or star system) in the constellation of Draco. A relatively inconspicuous star in the night sky of the Northern Hemisphere, it is historically significant as having been the north pole star from the 4th to 2nd millennium BC. It is sometimes known as the Dragon's Tail and as Adib. Even though Johann Bayer gave Thuban the designation Alpha, its apparent magnitude of 3.65 is 3.7 times fainter than the brightest star in the constellation, Gamma Draconis (Eltanin), whose apparent magnitude is 2.24. == Visibility == Given good viewing conditions, Thuban is relatively easy to spot in the night sky, due to its location in relation to the Big Dipper asterism of Ursa Major. While it is well known that the two outer stars of the 'dipper' point to the modern-day pole star Polaris, it is less well known that the two inner stars, Phecda and Megrez, point to Thuban, just 15 degrees of arc from Megrez. Thuban is not bright enough to be viewed from badly light-polluted areas. 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「Thuban」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.