sofa_c

Library for algorithms for models in fundamental astronomy

This is a suite of vector/matrix routines and various utilities that underpin the astronomy algorithms, which include routines for the following: * Calendars * Time Scales * Earth rotation and sidereal time * Ephemerides (medium precision) * Geocentric/geodetic transformations * Precession, nutation, polar motion * Star space motion * Star catalogue conversion This is the ANSI C version of the library. The International Astronomical Union's SOFA service has the task of establishing and maintaining an accessible and authoritative set of algorithms and procedures that implement standard models used in fundamental astronomy.

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