Dictionary of Nomenclature of Celestial Objects
(Last update: 31-May-2024)

Result of query: info cati AC2000$

Details on Acronym:   AC2000
   AC2000 (Astrographic Catalogue, 2000) Write:<<AC2000 NNNNNNN>> N: 4621751 Object:*  (SIMBAD class: Star) Note:'The AC2000: the Astrographic Catalogue on the Hipparcos System'.
The United States Naval Observatory has completed the reductions of the Astrographic Catalogue data AC to a consistent system. The resulting catalog, called AC 2000, contains 4621836 stars covering the entire sky, at an average epoch of 1907. The positions are on the Hipparcos reference frame (J2000.0) at the epochs of observation.
The catalogue is revised (1998AJ....115.1212U) and contains 4621751 stars. Ref:=1998AJ....115.1212U byURBAN S.E. , CORBIN T.E., WYCOFF G.L., MARTIN J.C., JACKSON E.S., ZACHARIAS M.I., HALL D.M. Astron. J., 115, 1212-1224 (1998) The AC 2000: the astrographic catalogue on the system defined by the Hipparcos catalogue. o<AC2000 NNNNNNN> N=4621751. =E=Catalogue in electronic form as I/275 Originof the Acronym: A = Assigned by the author(s)