equinoctial circle


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equinoctial circle

equinoctial circle

or

equinoctial line

n
(Astronomy) another name for celestial equator
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.equinoctial circle - the great circle on the celestial sphere midway between the celestial poles
great circle - a circular line on the surface of a sphere formed by intersecting it with a plane passing through the center
References in periodicals archive ?
As stated in Almagest III, 1, Ptolemy had "one" equinoctial circle in the square stoa and some in the Palaestra.
The city of Christianopolis is given impossible geographical coordinates with the "Academic Sea" ("in the Antarctic zone, 10 [degrees] of the south pole, 20 [degrees] of the equinoctial circle, and about 12 [degrees] under the point of the bull") to render it a utopia or nowhere-land.