翻訳と辞書 Words near each other ・ Eccellenza Emilia–Romagna ・ Eccellenza Friuli – Venezia Giulia ・ Eccellenza Lazio ・ Eccellenza Liguria ・ Eccellenza Lombardy ・ Eccellenza Marche ・ Eccellenza Molise ・ Eccellenza Piedmont and Aosta Valley ・ Eccellenza Sardinia ・ Eccellenza Sicily ・ Eccellenza Trentino-Alto Adige/Südtirol ・ Eccellenza Tuscany ・ Eccellenza Umbria ・ Eccellenza Veneto ・ Eccentric (mechanism) ・ Eccentric anomaly ・ Eccentric Club ・ Eccentric dance ・ Eccentric flint (archaeology) ・ Eccentric Jupiter ・ Eccentric reducer ・ Eccentric training ・ Eccentric-hub scooter ・ Eccentricities of a Blonde-haired Girl ・ Eccentricity ・ Eccentricity (behavior) ・ Eccentricity (mathematics) ・ Eccentricity vector ・ Eccentrik ・ Eccentrix Remixes 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 Eccentric anomaly ： ウィキペディア英語版 Eccentric anomaly In orbital mechanics, eccentric anomaly is an angular parameter that defines the position of a body that is moving along an elliptic Kepler orbit. The eccentric anomaly is one of three angular parameters ("anomalies") that define a position along an orbit, the other two being the true anomaly and the mean anomaly. ==Graphical Representation== Consider the ellipse with equation given by: :$\backslash frac\; +\; \backslash frac\; =\; 1,$ where ''a'' is the ''semi-major'' axis and ''b'' is the ''semi-minor'' axis. For a point on the ellipse, ''P=P(x, y)'', representing the position of an orbiting body in an elliptical orbit, the eccentric anomaly is the angle ''E'' in the figure to the right. The eccentric anomaly, ''E'', is observed by drawing a right triangle with one vertex at the center of the ellipse, having hypotenuse ''a'' (equal to the ''semi-major'' axis of the ellipse), and opposite side (perpendicular to the ''major-axis'' and touching the point ''P′'' on the auxiliary circle of radius ''a'') that crosses through the point ''P''. The eccentric anomaly is measured in the same direction as the true anomaly, shown in the figure as ''f''. The eccentric anomaly ''E'' in terms of these coordinates is given by:〔 〕 :$\backslash cos\; E\; =\; \backslash frac\; ,$ and :$\backslash sin\; E\; =\; \backslash frac$ The second equation is established using the relationship $\backslash right)\}^2\; =\; 1-^2\; E=^2\; E$, which implies that $\backslash sin\; E\; =\; \backslash pm\; \backslash frac$. The equation $\backslash sin\; E\; =\; -\; \backslash frac$ is immediately able to be ruled out since it traverses the ellipse in the wrong direction. It can also be noted that the second equation can be viewed as being the similar triangle with adjacent side through ''P'' and the minor auxiliary circle, hypotenuse b, and whose opposite side is y. 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「Eccentric anomaly」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.