precess library

Classes

EclipticPrecessor

Ecliptic precession from one epoch to another.

Precessor

Precessor for equatorial coordinates between two epochs.

Functions

approxAnnualPrecession(double ra, double dec, double epochFrom, double epochTo) → ({double dAlpha, double dDelta})

Approximate annual precession in RA and Dec.

position(double ra, double dec, double epochFrom, double epochTo, double mAlpha, double mDelta) → ({double dec, double ra})

Precesses equatorial coordinates including proper motion.