If the sky co-ordinate system specified by SCS is not referred to the equinox (e.g. GALACTIC) then EQU is returned equal to the Starlink "BAD" value VAL__BADD, and BJ is returned blank.
The argument NAME is returned holding the full (unabbreviated) name of the sky co-ordinate system without any equinox specifier. On exit, the argument SCS holds the full name plus an explicit equinox specifier (for systems which are referred to the equinox). Thus, if SCS contained "EQUAT" on entry, it would contain "EQUATORIAL(B1950)" on exit.
KAPLIBS -- Internal subroutines used within the KAPPA package.