The USNO-B1.0 Catalog

The USNO-B1.0 is a catalog that presents positions, proper motions, magnitudes in various optical passbands, and star/galaxy estimators for 1,045,913,669 objects derived from...USNO-B1.0星表（USNO-B1.0）是一款天体星表，涵盖了源自……的1045913669个天体的位置、自行、多种光学通带下的星等，以及恒星与星系属性估计参数。