Define the terms "Right Ascension" and "Declination" and give their units of measurement.
declination is one of the two angles that locate a point on the celestial sphere in the equatorial coodinate system. unit of measurement is degree
Right ascension (symbol α) is the angular distance measured eastward along the celestial equator from the Vemal equinox to the hour circle of the point in question. unit of measurement is radian
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