UCAC (USNO CCD Astrometric Catalog)

The UCAC (USNO CCD Astrometric Catalog) is a comprehensive database that precisely records the positions and movements of stars. Created using advanced digital cameras and telescopes, it provides detailed information on star locations, brightness, and how they shift over time. This catalog helps astronomers accurately track star positions, study stellar motions, and support various celestial research and navigation systems. Essentially, it’s a precise star map built from high-quality data, enabling us to better understand our galaxy’s structure and dynamics.