apse line

Fetched 2026-10-26 (cache).

Synonyms: base line, ape like

Antonyms: base line, ape like

Related words from Datamuse; suggestions, not definitions.

Noun

1. {{lb|en|astronomy}} An imaginary line defined by an orbit's eccentricity vector. For such orbits the apse line is found: for elliptical orbits – between the orbit's periapsis and apoapsis (also known as the major axis) for parabolic and hyperbolic orbits – between the orbit's periapsis and focus.

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