Right ascension of a star is a measure of
A) the time of its rising in the eastern sky.
B) its position above the observer's horizon, measured from the horizon.
C) its position north or south of the celestial equator, along a great circle passing through the north and south celestial poles.
D) the great circle joining north and south celestial poles upon which it is located, the position of which is measured along the celestial equator.

Question

Quizplus · Accepted Answer

Right ascension is a celestial coordinate used to measure a star's position along the celestial equator, not its time of rising, its altitude above the horizon, or its declination (position north or south of the celestial equator).

Right Ascension of a Star Is a Measure of