celestial equator


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Related to celestial equator: celestial poles

celestial equator

n.
A great circle on the celestial sphere in the same plane as the earth's equator. Also called equinoctial, equinoctial circle.

celestial equator

n
(Astronomy) the great circle lying on the celestial sphere, the plane of which is perpendicular to the line joining the north and south celestial poles. Also called: equinoctial or equinoctial circle

celes′tial equa′tor


n.
the great circle of the celestial sphere, lying in the same plane as the earth's equator.
[1870–75]

celestial equator

A great circle on the celestial sphere in the same plane as the Earth's equator.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.celestial equator - the great circle on the celestial sphere midway between the celestial poles
great circle - a circular line on the surface of a sphere formed by intersecting it with a plane passing through the center
Translations
References in periodicals archive ?
The Spring, or March, Vernal Equinox is the moment the sun crosses the celestial equator -- the imaginary line in the sky above the Earth's equator -- from south to north.
A stunning piece of art front and back, this incredible piece displays hours, minutes, perpetual calendar, day/night indication, precision moonphase, age of the moon, running equation of time, sunrise and sunset, length of day and night, seasons, solstices, equinoxes and zodiacal signs, tide level indicator, Sun-Earth-Moon conjunction, opposition and quadrature, transparent celestial chart of the Northern Hemisphere with indication of the Milky Way, the ecliptic and the celestial equator, celestial time hours and minutes, tourbillon, 3-week power reserve (using 6 barrels), and power reserve indication.
After the autumnal equinox, Pagasa said 'Philippine nights will be longer as the sun moves below the celestial equator toward the southern hemisphere.
In the northern hemisphere, the Sun crosses the celestial equator moving southward.
But at sunset on March 19th, I observed the last bright spark of sunlight precisely in my "Road Henge" notch --just four hours before the Sun crossed the celestial equator.
declination The angular distance above (positive) or below (negative) the celestial equator.
Thereafter, Philippine nights will be longer as the sun moves below the celestial equator towards the southern hemisphere.
Earth's axis is inclined at approximately 23 degrees to the Sun's celestial equator changing the altitude of the Sun during the year.
By the time of dichotomy in late October the planet's declination will be well south of the celestial equator.
It is also the one constellation that is viewable all over the world, as it lies on the celestial equator.
As the sun crosses the celestial equator, the axis of the Earth points neither toward nor away from the sun, resulting in 12 hours of light and 12 hours of darkness.