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abstraction > mathematical concept > geometrical object > point > coordinate > equatorial coordinate

equatorial coordinate
subject			fact

equatorial coordinate	has declination
	has right ascension
	has component equatorial coordinate component
	is a kind of coordinate
point	has dimensions 0

Kinds of equatorial coordinate :

• antapex (4 facts) - The direction in the sky away from which the Sun seems to be moving (at a speed of 19.4 km s^-1) relative to general field stars in the Galaxy.
• celestial ephemeris pole (2 facts) - The reference pole for nutation and polar motion; the axis of figure for the mean surface of a model Earth in which the free motion has zero amplitude. This pole has no nearly diurnal nutation with respect to a space-fixed or Earth-fixed coordinate system.
• celestial pole (2 kinds, 13 facts) - One of two points at which the Earth's axis of rotation, if extended, would intersect the celestial sphere.
• solar apex (4 facts) - A point on the celestial sphere toward which the Sun and the solar system are moving with respect to the local standard of rest at a rate of about 19.4 km per second (about 4.09 AU per year).