periapsis

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English

Definitions

noun

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 minimum.

Related words

Synonyms

pericenter point of periapsis apoapsis apapsis apsis apse periastron apogee perigee apastron apse line perigalacticum apoastron peribaryon periareion apocentre

Antonyms

Associated

eccentricity precession ellipse inclination orbit longitude anomaly orbital ascending kinetic spacecraft

References