Lexic.us

Definition of Celestial longitude

1. Noun. (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"

Lexicographical Neighbors of Celestial Longitude

Literary usage of Celestial longitude

Below you will find example usage of this term as found in modern and/or classical literature:

1. International Library of Technology: A Series of Textbooks for Persons by International Textbook Company (1903)
"Secondaries to the ecliptic are called circle» of celestial longitude. The celestial longitude of a star is the arc of the ecliptic measured eastwards from ..."

2. High-school Astronomy by Hiram Mattison (1872)
"celestial longitude is distance east of a given point in the heavens, ... the manner in which celestial longitude is reckoned eastward around the heavens. ..."

3. A Text-book of General Astronomy: For Colleges and Scientific Schools by Charles Augustus Young (1888)
"celestial longitude is always reckoned eastward from the vernal equinox, completely around the ecliptic, so that time longitude of the sun when 10° west of ..."

4. The Horological Journal: The Special Organ of the British Horological Institute by British Horological Federation, British Horological Institute (1860)
"But there are some circles peculiar to the celestial sphere ; the principal of these are the ecliptic, or tke circle of celestial longitude, and the perpen- ..."

5. An Introduction to Astronomy by Denison Olmsted (1856)
"celestial longitude, is the distance of a body from the vernal equinox reckoned on the ecliptic. Celestial Latitude, is distance from the ecliptic measured ..."

6. An Elementary Astronomy for Academies and Schools: Illustrated by Numerous by Hiram Mattison (1849)
"... which is, nevertheless, south of the equinoctial. Lesson 34. celestial longitude. (Map 6. ... celestial longitude."

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