3 docs tagged with "right ascension"

Right ascension and declination, measured from the celestial equator — the astronomer's frame, and the one the sky's daily turn makes natural.

Right ascension is one angle written two ways: star catalogues quote hours because the sky turns once a day, and astrological software quotes degrees, at fifteen degrees to the hour.

Signs are divisions of the ecliptic. Right ascension is measured around a different circle, so a sign name attached to it would name a region the body is not in, which is why sign names are withheld.