A CATALOG AND ATLAS OF CATACLYSMIC VARIABLES - 2ND EDITION

We present a catalog of all 1020 known cataclysmic variables (CVs). Th is paper is a major update of the first edition of the catalog (Downes and Shara, 1993, PASP, 105, 127), which contained coordinates (measur ed in the reference frame of the Hubble Space Telescope Guide Star Sur vey for the non-novae, and obtained from the literature for the novae) , the variability type, the magnitude range, and references to both fi nding charts and spectroscopy. Also included in the catalog were findi ng charts for all dwarf novae, novalike variables, and objects classif ied only as cataclysmic variables known as of 1993; a similar catalog and atlas for novae has been published by Duerbeck (1987, SSRV, 45, 1) . This updated edition includes 195 new objects (172 CVs and 23 non-CV s), revised identifications for 57 objects, and revised information (c lassification and spectral references) when available. We also now inc lude plate identification information for the coordinate measurements, a reference to the classification, proper motion information where ap propriate, and a table showing the CVs observed by space-based observa tories. This second edition is inclusive of the first edition, althoug h only new or updated charts are presented.