S for supergalactic coordinates. Position is assumed to be in degrees for both longitute and latitude. E for ecliptic coordinates. The equinox can also be specified in this case. The default assumed for the equinox is 2000.
Position is assumed to be in degrees for both longitute and latitude.
B for Equatorial coordinates based on FK4. The equinox can also be specified in this case. The default assumed for the equinox is the catalogue's. The equinox can also be specified in this case. The default assumed for the equinox is the catalogue's.