翻訳と辞書 Words near each other ・ Circumflegrea railway ・ Circumflex ・ Circumflex artery ・ Circumflex branch of left coronary artery ・ Circumflex femoral artery ・ Circumflex fibular artery ・ Circumflex iliac artery ・ Circumflex scapular artery ・ Circumhorizontal arc ・ Circumlocution ・ Circumlunar trajectory ・ Circumnavigation ・ Circumnavigation world record progression ・ Circumostomy eczema ・ Circumpolar ・ Circumpolar constellation ・ Circumpolar deep water ・ Circumpolar distribution ・ Circumpolar Health Bibliographic Database ・ Circumpolar peoples ・ Circumpolar star ・ Circumscribed circle ・ Circumscribed halo ・ Circumscribed sphere ・ Circumscription ・ Circumscription (logic) ・ Circumscription (taxonomy) ・ Circumscriptional name ・ Circumspecte Agatis ・ Circumsporozoite protein 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 Circumpolar constellation ： ウィキペディア英語版 Circumpolar constellation In astronomy, the circumpolar constellations are constellations that never set from the viewer's perspective. Considered a very important effect in astronomy, it is different from seasonal constellations. Circumpolar constellations stay in the sky. Because of the rotation of the Earth and its orbit around the Sun, we divide the stars and constellations into two groups. Some stars and constellations never rise nor set, and they are called circumpolar. All the rest are divided into seasonal stars and constellations. Which stars and constellations will be circumpolar and which seasonal depends on your latitude. In the northern hemisphere, we will always be able to see stars and constellations in the northern circumpolar sky, while in the southern hemisphere, we will always be able to see stars and constellations in the southern circumpolar sky. The celestial north pole, currently marked by Polaris, always has an azimuth equal to zero. Also, its altitude for a given place is fixed and its value is given by the following formula: A = 90-Ø. All stars with a declination less than A are not circumpolar. They are also visible year round at that location. From the North Pole, all constellations north of the celestial equator, (all fully visible constellations) are circumpolar, and similarly from the South Pole. From the equator, there are no circumpolar constellations. From mid-north latitudes (40–50°N), circumpolar constellations may include Ursa Major, Ursa Minor, Draco, Cepheus, Cassiopeia and the not well known Camelopardalis. 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「Circumpolar constellation」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.