- The angular length eastward from vernal equinox along the ecliptic towards great-circle attracted through pole associated with ecliptic and a celestial human body.
- (astronomy) the equatorial coordinate indicating the angle, sized eastward along the celestial equator, from the vernal equinox into intersection regarding the hour-circle that passes through an object into the sky; generally expressed in hours and mins and seconds; used in combination with declination to specify jobs on the celestial world
Hypernym for "celestial longitude"
- angular distance
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