Zacharias, Nobert; McCallon, Howard L.; Kopan, Eugene; Cutri, Roc M.
(Pasadena, CA : Jet Propulsion Laboratory, National Aeronautics and Space Administration, 2003., 2003-07)
An external comparison between the infrared 2MASS and the optical UCAC positions was performed, both being on the same system, the ICRS.