翻訳と辞書 Words near each other ・ Baryan ・ Baryancistrus ・ Baryancistrus demantoides ・ Baryancistrus xanthellus ・ Baryatino ・ Baryatinsky ・ Baryatinsky District ・ Baryavan ・ Barybela ・ Barycenter ・ Barycentric ・ Barycentric celestial reference system ・ Barycentric coordinate system ・ Barycentric Coordinate Time ・ Barycentric Dynamical Time ・ Barycentric Julian Date ・ Barycentric subdivision ・ Barycentric-sum problem ・ Barychelidae ・ Barycholos ・ Barycholos pulcher ・ Barycholos ternetzi ・ Barycnemis blediator ・ Barycypraea ・ Barycypraea fultoni ・ Barycypraea teulerei ・ Barycz ・ Barycz (disambiguation) ・ Barycz Nowa ・ Barycz Stara 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 Barycentric Julian Date ： ウィキペディア英語版 Barycentric Julian Date The Barycentric Julian Date (BJD) is the Julian Date (JD) corrected for differences in the Earth's position with respect to the barycentre of the Solar System. Due to the finite speed of light, the time an astronomical event is observed depends on the changing position of the observer in the Solar System. Before multiple observations can be combined, they must be reduced to a common, fixed, reference location. This correction also depends on the direction to the object or event being timed. In 1991, the BJD replaced the Heliocentric Julian Date (HJD), which reduced times to the centre of the Sun, which itself orbits the barycentre. The difference between HJD and BJD is up to ±4 s. == Magnitude of the correction == The correction is small for objects at the poles of the ecliptic. Elsewhere, it is approximately an annual sine curve, and the highest amplitude occurs on the ecliptic. The maximum correction corresponds to the time in which light travels the distance from the barycentre to the Earth, i.e. ±8.3 min (500 s, 0.0058 days). 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「Barycentric Julian Date」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.