Apsidal: alternatives and connections

A small periodical change of position in the stars and other heavenly bodies, due to the combined effect of the motion of light and th…

The angular distance of a planet from its perihelion, as seen from the sun. This is the true anomaly. The eccentric anomaly is a corre…

Pertaining to, or situated in, the region of the front of the orbit.

That point in the orbit of a double star where the smaller star is farthest from its primary.

apoapsis in solar orbit; the point in the orbit of a planet or comet that is at the greatest distance from the sun

(astronomy) the point in an orbit farthest from the body being orbited

apoapsis in Earth orbit; the point in its orbit where a satellite is at the greatest distance from the Earth

apoapsis in orbit around Jupiter

apoapsis in orbit around the moon

apoapsis in orbit around the moon

One of the two points of an orbit, as of a planet or satellite, which are at the greatest and least distance from the central body, co…

a particular environment or walk of life; "his social sphere is limited"; "it was a closed area of employment"; "he's out of my orbit"

the point at which an orbit crosses the ecliptic plane going north

The prominent ridge over the eye, with the hair that covers it, forming an arch above the orbit.

the acceleration toward the center that holds a satellite in elliptical orbit

The act of moving or revolving around, or as in a circle or orbit; a revolution; as, the periodical circuit of the earth round the sun.

the point at which an orbit crosses the ecliptic plane going south

Deviating or departing from the center, or from the line of a circle; as, an eccentric or elliptical orbit; pertaining to deviation fr…