periapsis


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Related to periapsis: true anomaly

per·i·ap·sis

 (pĕr′ē-ăp′sĭs)
n. pl. per·i·ap·si·des (-sĭ-dēz′)
The point at which an orbiting object is closest to the center of mass of the body it is orbiting.

periapsis

(ˌpɛrɪˈæpsɪs)
n
(Astronomy) astronomy the closest point to a central body reached by a body in orbit
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.periapsis - (astronomy) the point in an orbit closest to the body being orbited
astronomy, uranology - the branch of physics that studies celestial bodies and the universe as a whole
celestial point - a point in the heavens (on the celestial sphere)
celestial orbit, orbit - the (usually elliptical) path described by one celestial body in its revolution about another; "he plotted the orbit of the moon"
perigee - periapsis in Earth orbit; the point in its orbit where a satellite is nearest to the Earth
perihelion - periapsis in solar orbit; the point in the orbit of a planet or comet where it is nearest to the sun
perijove - periapsis in orbit around Jupiter
perilune, periselene - periapsis in orbit around the moon
apoapsis, point of apoapsis - (astronomy) the point in an orbit farthest from the body being orbited
Translations
périastre
References in periodicals archive ?
The primary mission includes five "deep-dip" campaigns, in which MAVEN's periapsis, or lowest orbit altitude, will be lowered from 93 miles (150 kilometers) to about 77 miles (125 kilometers).
ISRO scientists have planned to set the spacecraft in an orbit of 377 km periapsis (nearest point from the red planet) and 80,000 km apoapsis (farthest point).