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Periapsis vs Periherm - What's the difference?

periapsis | periherm |

Periapsis is a see also of periherm.


As nouns the difference between periapsis and periherm

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 periherm is (astronomy) in an orbit around the planet mercury, the point that is closest to mercury.

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)

    periherm

    English

    Noun

    (en noun)
  • (astronomy) In an orbit around the planet Mercury, the point that is closest to Mercury.

    • Antonyms

    * (a point in an orbit around the planet Mercury) apoherm

    References

    *BepiColombo Mission

    See also

    * periapsis * perihelion * perigee