Calculates the longitude $\ast$ obliquity components and mean obliquity using the SOFA/ERFA library.

void palNutc( double date, double $\ast$ dpsi, double $\ast$deps, double $\ast$eps0 );

date = double (Given)

dpsi = double $\ast$ (Returned)

deps = double $\ast$ (Returned)

eps0 = double $\ast$ (Returned)

• Calls eraObl06 and eraNut06a and therefore uses the IAU 206 precession/nutation model.

• Note the change from SLA/F regarding the date. TT is used rather than TDB.