Periapsis vs Apsis - What's the difference?

periapsis | apsis | Derived terms |

Periapsis is a derived term of apsis.

Periapsis is a derived term of apsis.


In context|astronomy|lang=en terms the difference between periapsis and apsis

is that periapsis is (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 while apsis is (astronomy) either of the points in the elliptical orbit of a planet or comet where it is closest or furthest from the sun; perihelion or aphelion; an apside.

As nouns the difference between periapsis and apsis

is that periapsis is (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 while apsis is (architecture) a recess or projection, with a dome or vault, at the east end of a church; an apse.

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

    See also

    * (Apsis)

    apsis

    English

    (wikipedia apsis)

    Noun

    (apsides)
  • (architecture) A recess or projection, with a dome or vault, at the east end of a church; an apse.
  • (astronomy) Either of the points in the elliptical orbit of a planet or comet where it is closest or furthest from the sun; perihelion or aphelion; an apside
  • Derived terms

    * periapsis * apoapsis