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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 Relative angular momentum ： ウィキペディア英語版 Relative angular momentum In celestial mechanics, the relative angular momentum ($\backslash mathbf\backslash ,\backslash !$) of an orbiting body ($m\_2\backslash ,\backslash !$) relative to a central body ($m\_1\backslash ,\backslash !$) is the moment of ($m\_2\backslash ,\backslash !$)'s relative linear momentum: :$\backslash mathbf=\backslash mathbf\backslash times\; m\_2\backslash mathbf\backslash ,\backslash !$ where: *$\backslash mathbf\backslash ,\backslash !$ is the orbital position vector of the orbiting body relative to the central body, *$\backslash mathbf\backslash ,\backslash !$ is the orbital velocity vector of the orbiting body relative to the central body, *$m\_2\backslash ,\backslash !$ is mass of the orbiting body. For a body in an unperturbed orbit about a central body, the orbital plane is stationary, and the relative angular momentum ($\backslash mathbf\backslash ,\backslash !$) is perpendicular to the orbital plane. For perturbed orbits where the orbital plane is in motion, the relative angular momentum vector is perpendicular to the (osculating) orbital plane at only two points in the orbit. ==Uses== In astrodynamics relative angular momentum is usually used to derive specific relative angular momentum ($\backslash mathbf\backslash ,\backslash !$): :$\backslash mathbf=\backslash mathbf/m\_2\backslash ,\backslash !$ where: *$m\_2\backslash ,\backslash !$ is mass of the orbiting body. 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「Relative angular momentum」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.