celestial longitude: see ecliptic longitude.
celestial pole: the points on the Earth's axis where it meets the celestial sphere. The stars appear to rotate around these poles.
Celestial Longitude
Angular distance along the ecliptic from the vernal equinox eastward.
Celestial Mechanics ...
celestial longitude ()
galactic longitude (l)
*This table is from the 1965 edition of the Dictionary Dictionary of Technical Terms for Aerospace Use (NASA SP-7).
For definitions of terms, see individual entries.
Celestial longitude of the ascending node are the remaining elements.
The orbital period is of interest to operations, although it is not one of the six Keplerian elements needed to define the orbit.
celestial longitude Angular distance east of the vernal equinox, along the ecliptic; ...
Having established the relative positions of the signs in the houses, the astrologer positions the sun, moon, and planets at their rightful celestial longitudes.
He discovered that the celestial longitudes were different and that this difference was of a magnitude exceeding that attributable to errors of observation.
The phenomenon in which two bodies have the same apparent celestial longitude (see Longitude, Celestial) or right ascension as viewed from a third body. Conjunctions are usually tabulated as geocentric phenomena.
Zodiac denotes an annual cycle of twelve stations along the ecliptic, the apparent path of the Sun across the heavens through the constellations that divide the ecliptic into twelve equal zones of celestial longitude....
Month, Tropical. The time taken for the Moon to return to the same celestial longitude (7 seconds shorter than the sidereal month).
The zero point for celestial longitude (that is, for right ascension) is the Vernal Equinox, which is that intersection of the ecliptic and the celestial equator near where the Sun is located in the Northern Hemisphere Spring.
that uses the ecliptic as the reference plane and the First Point of Aries as the reference direction. The co-ordinates are given as ecliptic latitude (b) and ecliptic longitude (l). (These are also called celestial latitude and celestial longitude.) ...
This recorded the precise times at which the star crossed the wires. From these measurements, astronomers could calculate precisely when a star had crossed the meridian, and convert this time into the celestial longitude of the star, ...
 See also: Longitude, Earth, Sun, Circle, Ecliptic
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