Standards of Fundamental Astronomy

The Division A functional working group, Standards of Fundamental Astronomy (SOFA), continues to establish an accessible and authoritative set of algorithms and procedures that implement standard models (including IAU Standard models) used in fundamental astronomy with regular updates to ensure the software remains relevant. This poster gives an overview of the service SOFA provides and emphasizes the current software included in the collection SOFA makes available in fourteen areas including Astrometry, Earth Rotation and Precession-Nutation.  These are topics of interest for Astrometry in the 21st century.