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Title: Extending the ICRF into the infrared : 2MASS - UCAC astrometry
Authors: Zacharias, Norbert
McCallon, Howard L.
Kopan, Eugene
Cutri, Roc M.
Keywords: 2MASS
International Celestial Reference Frame (ICRF)
USNO CCD Astrograph Catalog (UCAC)
Issue Date: 22-Jul-2000
Publisher: Pasadena, CA : Jet Propulsion Laboratory, National Aeronautics and Space Administration, 2003.
Citation: IAU XXC, Joint Discussion 16 : The International Celestial Reference System, Maintenance and Future Realizations, Sydney, Australia, July 22, 2003.
Abstract: An external comparison between the infrared 2MASS and the optical UCAC positions was performed, both being on the same system, the ICRS. About 48 million sources in common were identified. Random errors of the 2MASS catalog positions are about 60 to 70 mas per coordinate for the Ks = 4 to 14 range, increasing to about 100 to 150 mas for saturated and very faint stars. Systematic position differences between the 2 catalogs are very small, about 5 to 10 mas as a function of magnitude and color, with somewhat larger errors as a function of right ascension and declination. The extension of the ICRF into the infrared has become a reality.
Appears in Collections:JPL TRS 1992+

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