the point on the celestial sphere toward which the sun and solar system appear to be moving relative to the fixed stars
2
n the highest point (of something) n the point on the celestial sphere toward which the sun and solar system appear to be moving relative to the fixed stars
3
used with right ascension to specify positions on the celestial sphere
4
used with right ascension to specify positions on the celestial sphere n
5
the great circle on the celestial sphere whose plane passes through the sensible horizon and the center of the Earth
