invariable plane

noun

The orbital plane passing through a planetary system's barycenter (center of mass) perpendicular to its angular momentum vector.

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Meanings

nouninvariable plane (plural invariable planes)

plural invariable planes

  1. astronomyThe orbital plane passing through a planetary system's barycenter (center of mass) perpendicular to its angular momentum vector.
Cite this entry
APA

invariable plane. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/invariable%20plane

MLA

“invariable plane.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/invariable%20plane. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “invariable plane,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/invariable%20plane.

Source: invariable plane on Wiktionary, CC BY-SA 4.0.