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Periapsis vs Periapse - What's the difference?

periapsis | periapse |

In astronomy terms the difference between periapsis and periapse

is that periapsis is 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 while periapse is a periapsis.

periapsis

English

Noun

(periapsides)
  • (astronomy) 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.

    • Usage notes

    In the case of some particular celestial bodies, specialised terms are used.

    Antonyms

    * apoapsis

    Synonyms

    * pericenter

    Related terms

    * periastron * perihelion * perilune * perigee

    See also

    * (Apsis)

    periapse

    English

    Noun

    (en noun)
  • (astronomy) A periapsis.