SOFA operates under the auspices of the International Astronomical
Union (IAU) to provide algorithms and software for use in astronomical
computing. The initiative is managed by an international panel, the
SOFA Board, appointed through IAU Division A. The Board obtains the
latest IAU-approved models and theories from the fundamental-astronomy
community, implements them as computer code and checks them for
accuracy. SOFA works closely with all the Commissions of the Division
and with the International Earth Rotation and Reference Systems
Service (IERS)