Apsis

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In celestial mechanics, an apsis, plural apsides is the point of greatest or least distance of the elliptical orbit of an object from its center of attraction, which is usually the center of mass of the system. The point of closest approach is called the periapsis or pericentre, from Greek , peri, around. The point of farthest excursion is called the apoapsis, apocentre or apapsis. A straight line drawn through the periapsis and apoapsis is the line of apsides. This is the major axis of the ellipse, the line through the longest part of the ellipse. Derivative terms are used to identify the body being orbited. The most common are perigee and apogee, referring to orbits around the Earth, and perihelion and aphelion, referring to orbits around the Sun. During the Apollo program, the terms pericynthion and apocynthion were used when referring to the moon.

Weitere Informationen

  • Allgemeine Informationen
    • GTIN 09786130677794
    • Editor Frederic P. Miller, Agnes F. Vandome, John McBrewster
    • Sprache Englisch
    • Genre Chemie
    • Größe H220mm x B150mm x T6mm
    • Jahr 2010
    • EAN 9786130677794
    • Format Fachbuch
    • ISBN 978-613-0-67779-4
    • Titel Apsis
    • Untertitel Apse, Aphelion (album), Perigee: Publication for the Arts, Apogee (disambiguation), Celestial mechanics, Elliptic orbit, Center of mass, Spiritus lenis
    • Gewicht 165g
    • Herausgeber Alphascript Publishing
    • Anzahl Seiten 100

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