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| Utgitt
| Washington, D.C. : United States Naval Observatory , 2001
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| Omfang
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| Opplysninger
| "A catalogue of positions and magnitudes of stars covering the entire sky around the epoch of 1900. The data are derive from images published as a part of the Astrographic Catalogue (AC), The positions are on the Hipparcos Celestial Reference System (HCRS), having been reduced plate-by-plate using ab HCRS-based version of the Astrographic Catalogue Reference Stars". - Omfatter også fotometriske målinger fra Tycho-2. Katalogene finnes bl.a. i Centre de Données de Strasbourg (CDS-databasen)
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| Emner
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