- the angular distance measured eastwards from the vernal equinox to the intersection of the ecliptic with the great circle passing through a celestial body and the poles of the eclipticAlso called: ecliptic longitude
WordReference Random House Unabridged Dictionary of American English © 2026
celes′tial lon′gitude, [Astron.]
- Astronomythe angular distance of a point on the celestial sphere from the great circle that is perpendicular to the ecliptic at the point of the vernal equinox, measured through 360° eastward parallel to the ecliptic.
Collins Concise English Dictionary © HarperCollins Publishers::
celestial longitude n
'celestial longitude' also found in these entries (note: many are not synonyms or translations):