Note: The Naval Observatory Merged Astrometric Dataset (NOMAD) contains astrometric and photometric data for over 1 billion stars derived from the Hipparcos (I/239), Tycho-2 (I/259), UCAC2 (I/289), and USNO-B1.0 (I/284) catalogs for astrometry and optical photometry, supplemented by 2MASS (II/246) near-infrared photometry. An efficient remote query program findnomad1 is available in the cdsclient package, for Unix/Linux platforms
Note: see the UCAC4 document, and the the fix for high proper motion stars. The UCAC home page is available at http://www.usno.navy.mil/USNO/astrometry/optical-IR-prod/ucac. Please acknowledge the usage of the UCAC4
Note:
(original column names in green) (1692919135 rows)
(original column names in green) (1811709771 rows)
Note: The ``short'' version of the catalogue can be retrieved by a selecting *+* in the SEQflags column
Note: on-line documentation at http://www.swift.ac.uk/1SXPS/docs.php
Note: on-line documentation at http://www.swift.ac.uk/2SXPS/docs.php