U.K. Schmidt-Caltech Asteroid Survey, or U.K. Schmidt Telescope-Caltech asteroid survey, or UCAS is the joint astronomical survey performed in 1982. This survey are no longer exist as separate entity, but rather integrated into astorb asteroids

Asteroid

Asteroids are a class of small Solar System bodies in orbit around the Sun. They have also been called planetoids, especially the larger ones...

 database.
The UCAS catalog data format is plain text, after uncompressing by unzip or gunzip it can be seen by any text viewers or by online ADC viewer. Specifications for catalog format are provided on the download sites.

Database download locations

• Download page for asteroids database, including UCAS database, 2001
• Download page for asteroids database, including UCAS database, 1998
• Caltech asteroids database, including UCAS database, 1996