Apsis - Wikipedia When used as a suffix—that is, -apsis —the term can refer to the two distances from the primary body to the orbiting body when the latter is located: 1) at the periapsis point, or 2) at the apoapsis point (compare both graphics, second figure)
apoapsis - Wiktionary, the free dictionary apoapsis (plural apoapsides or apoapsises or apoapses) (astronomy) The point of a body 's elliptical orbit about the system 's centre of mass where the distance between the body and the centre of mass is at its maximum
Chapter 3: Gravity Mechanics - NASA Science A spacecraft's apoapsis altitude can be raised by increasing the spacecraft's energy at periapsis This can be accomplished by firing on-board rocket thrusters when at periapsis
Apoapsis | COSMOS - Swinburne For an object moving in an elliptical orbit about another celestial body, the point of greatest separation is called the apoapsis (from the Greek apo = away from)
Orbital Nomenclature — Orbital Mechanics Astrodynamics The terms periapsis and apoapsis are composed of two parts - a prefix indicating the distance from the primary object, and a suffix indicating which astronomical body is the primary
Apoapsis -- from Wolfram MathWorld The greatest radial distance of an ellipse as measured from a focus Taking v=pi in the equation of an ellipse r= (a (1-e^2)) (1+ecosv) gives the apoapsis distance r_+=a (1+e) Apoapsis for an orbit around the Earth is called apogee, and apoapsis for an orbit around the Sun is called aphelion
University of Nevada, Las Vegas The apoapsis (AKA apocenter) is the arrangement of farthest separation and the term is also used for the farthest separation distance A physical fact for orbits is that astro-bodies move slowest at apoapsis and fastest at periapsis