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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Naval Observatory Vector Astrometry Subroutines ： ウィキペディア英語版 Naval Observatory Vector Astrometry Subroutines The Naval Observatory Vector Astrometry Software (NOVAS) is a software library for astrometry-related numerical computations. It is developed by the Astronomical Applications Department, United States Naval Observatory. Currently, NOVAS has three different editions for C, Fortran, and Python, respectively. ==Algorithms== The algorithms used by NOVAS are based on vector astrometry theories and the IAU resolutions. Instead of using trigonometric formulae from spherical astrometry, NOVAS uses the matrix and vector formulation which is more rigorous. This version implements the resolutions on astronomical reference systems and Earth rotation models passed at the IAU General Assemblies in 1997, 2000, and 2006. According to the Astronomical Applications Department, the algorithms used in NOVAS are identical to those used in the production of the US part of the Astronomical Almanac.〔(【引用サイトリンク】title=NOVAS )〕 A detailed description of the algorithms can be found here: Kaplan, et al. (1989) ''Astron. J.'' 97, 1197. 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「Naval Observatory Vector Astrometry Subroutines」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.