翻訳と辞書 Words near each other ・ Apsectus ・ APSET ・ Apsethus the Libyan ・ Apsey ・ Apsey Beach ・ Apsey Brook ・ Apsey Cove ・ Apsey Green ・ Apsey Point ・ Apshawa Preserve ・ Apsheronsk ・ Apsheronsk narrow-gauge railway ・ Apsheronsky ・ Apsheronsky District ・ Apsicilia pacifica ・ Apsidal precession ・ Apsidiole ・ Apsidoceratidae ・ Apsidocnemus ・ Apsidophora ・ Apsigiyu ・ Apsilae ・ Apsilocephalidae ・ Apsilus ・ Apsines ・ Apsinga ・ Apsinthii ・ Apsiou ・ Apsis ・ Apsisaurus 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 Apsidal precession ： ウィキペディア英語版 Apsidal precession In celestial mechanics, perihelion precession, apsidal precession or orbital precession is the precession (rotation) of the orbit of a celestial body. More precisely, it is the gradual rotation of the line joining the apsides of an orbit, which are the points of closest and farthest approach. Perihelion is the closest point to the Sun. The apsidal precession is the first derivative of the argument of periapsis, one of the six primary orbital elements of an orbit. ==History== The ancient Greek astronomer Hipparchos noted the apsidal precession of the Moon's orbit; it is corrected for in the Antikythera Mechanism (circa 80 BCE) with the rather exact value of 8.88 years per full cycle, correct within 0.34%. The precession of the solar apsides was discovered in the eleventh century by al-Zarqālī.〔, at pp. 314-17.〕 The lunar apsidal precession was not accounted for in Claudius Ptolemy's Almagest, and as a group these precessions, the result of a plethora of phenomena, remained difficult to account for until the 20th century when the last unidentified part of Mercury's precession was precisely predicted in Albert Einstein's general theory of relativity. 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「Apsidal precession」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.