The most common are
perigee icon | ˈ | p | Er | i- | dZ | i: and apogee icon | ˈ | ae | p | o- | dZ | i:, referring to orbits around the
Kaynak: ApsisFor specific types of orbits, words such as "perihelion" (for Sun -centered orbits), "
perigee" (for Earth -centered orbits), "periastron
Kaynak: Argument of periapsisIts significance is that when you start with a full moon at the
perigee - which appears large, then subsequent full moons will occur ever
Kaynak: Full moon cycle(geostationary (GEO) altitude, 35786 | km | mi | 3 | abbr on above sea level) and an argument of
perigee such that apogee occurs on or near the equator.
Kaynak: Geostationary transfer orbiteach satellite is offset by 120 degrees so that when one satellite moves out of position, another has passed
perigee and is ready to take over.
Kaynak: Tundra orbitTo do this around the Earth , it must be on a free trajectory which has an altitude at
perigee (altitude at closest approach) above 100
Kaynak: Orbital spaceflightThis is the reason that an anomalistic month (the period of time that the Moon moves from the
perigee to the apogee and to the
perigeeKaynak: Lunar precessionMolniya orbit is a type of highly elliptical orbit with an inclination of 63.4 degree s, an argument of
perigee of −90 degrees and an
Kaynak: Molniya orbitA highly elliptical orbit (HEO) is an elliptic orbit with a low-altitude (about 1000 | km | nmi)
perigee and a high-altitude (over 35,786
Kaynak: Highly elliptical orbitThe satellite was allowed to drift a safe distance from the space shuttle before the
perigee motor was fired The
perigee motor provided
Kaynak: Intelsat VIIt has a fairly eccentric orbit , with an initial
perigee of 320 km and apogee of 845 km. MIMOSA is no longer in orbit. NORAD reported
Kaynak: MIMOSAOther definitions for the duration of a lunar month include the time it takes to go from
perigee to
perigee (the anomalistic month ), from
Kaynak: Orbit of the Moonvaries over the course of the orbit of the moon , from 356700 | km | mi | abbr on at the
perigee and 406300 | km | mi | abbr on at apogee .
Kaynak: Lunar distance (astronomy)Argument of
perigee and ground track: Image:Molniya. jpg | The ground track of a Molniya orbit If the argument of
perigee is zero, meaning
Kaynak: Ground track