Sloan Digital Sky Survey III
SkyServer DR10  
  Home     Data    Schema    Education     Astronomy    SDSS     Contact Us     Download    Site Search    Help    

DR10 Help
 Start Here
 FAQ
 Glossary
 Cooking with Sloan
 Tool User Guides
 Contact Help Desk
 
 Searching SDSS-III
 SQL Tutorial
 SQL in SkyServer
 About the Database
 Table Descriptions
 Sample SQL Queries
 Schema Browser
 Searching Advice
 Query Limits
 
 Details of the Data
 Algorithms
 Data Publications
 API
Table Descriptions

nametypetext
USNOPHOTO SDSS objects that match to USNO-B objects have their match parameters stored here
The source for this is the USNO-B1.0 catalog (Monet et al. 2003, AJ, 125, 984). This is simply the closest matching USNO-B1.0 object. See the ProperMotions table for proper motions after recalibrating USNO and SDSS astrometry. USNO-B contains five imaging surveys, two early epochs from POSS-I, and three later epochs from POSS-II, SERC and AAO.