periapsis – מילון אנגלי-אנגלי
periapsis
n.
point of an orbit when a satellite (or planet, star, etc.) is closest to the body being orbited (Astronomy)
Apsis
[Image:Apogee (PSF).png|thumb|275px|The apsides indicate the nearest and furthest points of an orbiting body around its host. ]]
periapsis
Noun
1. (astronomy) the point in as orbit closest to the body being orbited
(synonym) point of periapsis
(antonym) apoapsis, point of apoapsis
(hypernym) celestial point
(hyponym) perigee
(part-holonym) orbit, celestial orbit
(classification) astronomy, uranology
periapsis
In a
satellite orbit, the point that is closest to the gravitational center of the
system consisting of the primary body and the satellite. (
188 )
Note: In an orbit about the Earth, periapsis is called
perigee. In an orbit about the Moon, periapsis is called
perilune, and in an orbit about the Sun, it is called
perihelion.
periapsis
s.
periapsis (Astronomi)
