Declination in degrees: [-90, +90].
Distance to the celestial object expressed in astronomical units (AU).
Right ascension in sidereal hours: [0, 24).
The equatorial coordinates in cartesian form, using AU distance units. x = direction of the March equinox, y = direction of the June solstice, z = north.
Holds right ascension, declination, and distance of a celestial object.