NASA/IPAC Extragalactic Database
The NASA/IPAC Extragalactic Database (NED) is an on-line astronomical database for astronomers that collates and cross-correlates astronomical information on extragalactic objects (galaxies, quasars, radio, x-ray and infrared sources, etc.). NED is operated by the Jet Propulsion Laboratory on the campus of the California Institute of Technology, under contract with NASA.
As of May 2010, NED contains 163.2 million distinct astronomical objects with 170.7 million cross-identifications across multiple wavelengths, with redshift measurements for 1.6 million objects, 1.7 billion photometric data points, 8.8 million diameter measurements and 2.3 million images, maps and external links, together within links to journal articles, notes and abstracts.
See also
- SIMBAD - a database of information on Galactic objects, maintained by the Centre de Données astronomiques de Strasbourg, France
- NASA's Planetary Data System (PDS) - a database of information on solar system objects, also maintained by JPL
- NASA Astrophysics Data System (ADS)
- Bibcode
External links
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