void ln_get_equ_pm(struct ln_equ_posn *mean_position, struct ln_equ_posn *proper_motion, double JD, struct ln_equ_posn *position)
Calculate a stars equatorial position wrt proper motion (J2000).
Definition: proper_motion.c:37
double LIBNOVA_EXPORT ln_range_degrees(double angle)
puts a large angle in the correct range 0 - 360 degrees
Definition: utility.c:234