USNO CCD Astrograph Catalogue (UCAC) UCAC3: the software development and testing for the pixel re-reduction is now almost complete. The final catalogue release is currently scheduled for August 2009.
UCAC is an astrometric, observational program, which started in February 1998 at CTIO. All sky observations were completed at the Naval Observatory's Flagstaff Station in May 2004, and data reduction was completed in July 2009. The final UCAC3 catalogue will be released on August 10, 2009 at the meeting of IAU Commission 8, during the IAU General Assembly in Rio de Janero, Brazil.