翻訳と辞書 Words near each other ・ Ellis Hooks ・ Ellis Horowitz ・ Ellis Hotel ・ Ellis Hume-Williams ・ Elliptic cylindrical coordinates ・ Elliptic divisibility sequence ・ Elliptic filter ・ Elliptic flow ・ Elliptic function ・ Elliptic gamma function ・ Elliptic Gauss sum ・ Elliptic geometry ・ Elliptic hypergeometric series ・ Elliptic integral ・ Elliptic operator ・ Elliptic orbit ・ Elliptic partial differential equation ・ Elliptic pseudoprime ・ Elliptic rational functions ・ Elliptic singularity ・ Elliptic surface ・ Elliptic unit ・ Elliptical distribution ・ Elliptical galaxy ・ Elliptical poetry ・ Elliptical polarization ・ Elliptical Road ・ Elliptical trainer ・ Elliptical wing ・ Elliptics 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 Elliptic orbit ： ウィキペディア英語版 Elliptic orbit In astrodynamics or celestial mechanics an elliptic orbit is a Kepler orbit with the eccentricity less than 1; this includes the special case of a circular orbit, with eccentricity equal to zero. In a stricter sense, it is a Kepler orbit with the eccentricity greater than 0 and less than 1 (thus excluding the circular orbit). In a wider sense it is a Kepler orbit with negative energy. This includes the radial elliptic orbit, with eccentricity equal to 1. In a gravitational two-body problem with negative energy both bodies follow similar elliptic orbits with the same orbital period around their common barycenter. Also the relative position of one body with respect to the other follows an elliptic orbit. Examples of elliptic orbits include: Hohmann transfer orbit, Molniya orbit and tundra orbit. ==Velocity== Under standard assumptions the orbital speed ($v\backslash ,$) of a body traveling along an elliptic orbit can be computed from the Vis-viva equation as: :$v=\backslash sqrt\}\backslash right)\}$ where: *$\backslash mu\backslash ,$ is the standard gravitational parameter, *$r\backslash ,$ is the distance between the orbiting bodies. *$a\backslash ,\backslash !$ is the length of the semi-major axis. The velocity equation for a hyperbolic trajectory has either + $\{1\backslash over\{a\}\}$, or it is the same with the convention that in that case ''a'' is negative. 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「Elliptic orbit」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.