celestial longitude


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celestial longitude

n.
The angular distance of a celestial body from the vernal equinox, measured eastward along the ecliptic to a great circle passing sequentially through the body in question and the pole of the ecliptic. Also called ecliptic longitude.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

celestial longitude

n
(Astronomy) 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 ecliptic. Also called: ecliptic longitude
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.celestial longitude - (astronomy) the equatorial coordinate specifying the angle, measured eastward along the celestial equator, from the vernal equinox to the intersection of the hour circle that passes through an object in the sky; usually expressed in hours and minutes and seconds; used with declination to specify positions on the celestial sphere; "one hour of right ascension equals fifteen degrees"
astronomy, uranology - the branch of physics that studies celestial bodies and the universe as a whole
angular distance - the angular separation between two objects as perceived by an observer; "he recorded angular distances between the stars"
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
A new moon is a lunar phase that occurs once every 29.5 days, when the moon is between the Earth and sun as they're at the same celestial longitude.
conjunction The phenomenon in which two bodies have the same apparent celestial longitude or right ascension as viewed from a third body, usually the Earth.
Ideal for those with an interest in astronomy, the spherical framework of rings is centred on Earth and represents the lines of celestial longitude and latitude.
He marked off the compass points, and laid out the grid squares of right ascension and declination, celestial longitude and latitude.
This ornamental metal armillary in a silver nickel plated finish has a spherical framework of rings, centred on Earth, and represent lines of celestial longitude and latitude.