(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
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celestial longitude::noun | Spocien Dictionary
| Type | Words |
|---|---|
| Synonyms | ra, right ascension |
| Type of | angular distance |
Examples of celestial longitude
celestial longitude
The aspects are measured by the angular distance along the ecliptic in degrees and minutes of celestial longitude between two points, as viewed from the earth.
From the en.wikipedia.org
Right ascension is the celestial equivalent of terrestrial longitude.
From the en.wikipedia.org
The horizontal and vertical axes represent right ascension and declination, the celestial equivalent of longitude and latitude.
From the sciencedaily.com
The term chronometer is also used to describe a marine chronometer used for celestial navigation and determination of longitude.
From the en.wikipedia.org
The closest celestial counterpart to terrestrial latitude is declination, and the closest celestial counterpart to terrestrial longitude is right ascension.
From the en.wikipedia.org
Latitude is fairly easy to determine through celestial navigation, but the measurement of longitude requires accurate measurement of time.
From the en.wikipedia.org
Initially, the term was used to refer to the marine chronometer, a timepiece used to determine longitude by means of celestial navigation.
From the en.wikipedia.org
Initially, the term was used to refer to the marine chronometer, a timepiece used to determine longitude by means of celestial navigation, a precision firstly achieved by John Harrison.
From the en.wikipedia.org
Each second of error is equivalent to 15 seconds of longitude error, which at the equator is a position error of .29 mile, about the accuracy limit of manual celestial navigation.
From the en.wikipedia.org
