Relates a resource that is cartographic to its right ascension (the angular distance measured eastward on the Equator from the vernal equinox to the hour circle through the celestial body, from 0 to 24 hours), and declination (the angular distance to a body on the celestial sphere measured north or south through 90 degrees from the celestial equator along the hour circle of the body; comparable to latitude on the terrestrial sphere).