The Naval Observatory Merged Astrometric Dataset (NOMAD)

Details The Naval Observatory Merged Astrometric Dataset (NOMAD) The Naval Observatory Merged Astrometric Dataset (NOMAD)

Dec 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004aas...205.4815z&link_type=abstract

American Astronomical Society Meeting 205, #48.15; Bulletin of the American Astronomical Society, Vol. 36, p.1418

Astronomy and Astrophysics

Astronomy

157

Scientific paper

The U.S. Naval Observatory (USNO) announces the release of the first version of the Naval Observatory Merged Astrometric Dataset (NOMAD). The 100 GB dataset contains astrometric and photometric data for over 1 billion stars derived from the Hipparcos, Tycho-2, UCAC2, and USNO-B catalogs for astrometry and optical photometry, supplemented by 2MASS near-infrared photometry. For each unique star the "best" astrometric and photometric data are chosen from the source catalogs and merged into a single dataset. A sequence of priorities is followed and NOMAD contains flags to identify the source catalogs and gives cross-reference identifications. This first release of NOMAD is not a compiled catalog; that is, if a star is identified in more than 1 of the above mentioned catalogs, only 1 catalog entry is chosen. Thus the local and global systematic errors of the various source catalogs will be present in this version of NOMAD. All source catalogs astrometric data are on the International Celestial Reference System within the limitations of the source catalogs. For more information and data retrieval see our homepage www.nofs.navy.mil/nomad.

Affiliated with

Also associated with

No associations

Rating

The Naval Observatory Merged Astrometric Dataset (NOMAD) does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with The Naval Observatory Merged Astrometric Dataset (NOMAD), we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Naval Observatory Merged Astrometric Dataset (NOMAD) will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1638104