apse lines

A form of apse line — 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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Meanings

noun
  1. pluralplural of apse line
Cite this entry
APA

apse lines. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/apse%20lines

MLA

“apse lines.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/apse%20lines. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “apse lines,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/apse%20lines.

Source: apse lines on Wiktionary, CC BY-SA 4.0.