+ Summary of notation for astronomical equatorial coordinatesExplanatory Supplement (1961), sec. 1G Spherical Rectangular Right ascension Declination Distance General Special-purpose Geocentric , , , , (Sun) Heliocentric , ,
+ Summary of notation for astronomical equatorial coordinatesExplanatory Supplement (1961), sec 1G Spherical Rectangular Right ascension Declination Distance General Special-purpose Geocentric , , , , (Sun) Heliocentric , ,