CVs ivo://nasa.heasarc/cvcat NASA/GSFC HEASARC Downes et al. 2026-04-03 NASA/GSFC HEASARC help desk heasarc-vo at athena.gsfc.nasa.gov CV Star This catalog contains data for a large number of objects that have been classified as cataclysmic variables (CVs) as well as a smaller number of objects that are now not considered to be cataclysmic variables, but were originally classified erroneously as such. As of 2000 December, 40% of the objects in this catalog were dwarf novae, with another 30% being novae, and the rest being mostly nova-like variables; also as of this date, a large fraction (90%) of the CVs had references to published finding charts, while 64% of the objects had published spectra. The catalog includes coordinates measured in the reference frame of the Hubble Space Telescope Guide Star Survey for non-novae and from the literature for novae. Also given are the variability type, the magnitude range, orbital periods, flags indicating the existence of relevant space-based observational datsets, references to finding charts and spectroscopy, the galactic latitude and longitude, and the year of outburst (for novae). This edition also includes plate identification information for the coordinate measurements, and a reference to the classification. The Catalog and Atlas of Cataclysmic Variables (Downes et al. in 2001, PASP, 113, 764 and <a href="http://archive.stsci.edu/prepds/cvcat/">http://archive.stsci.edu/prepds/cvcat/</a>) presented here is the ASCII Report mentioned in Section 2.1 of the PASP paper, and is similar to the previously published versions of the CV Catalog (e.g., Downes, Webbink and Shara 1997, PASP, 109, 345, Table 1). The online version of the CV Catalog at <a href="http://archive.stsci.edu/prepds/cvcat/">http://archive.stsci.edu/prepds/cvcat/</a> contains additional data on these systems not included in this database, including finding charts. For a complete authoritative and up-to-date description of the CV Catalog, refer to <a href="http://archive.stsci.edu/prepds/cvcat/description.html">http://archive.stsci.edu/prepds/cvcat/description.html</a>, from which the HEASARC has constructed this help file. This HEASARC version of the CV Catalog was last updated in February 2006. This is a service provided by NASA HEASARC . 2001PASP..113..764D https://heasarc.gsfc.nasa.gov/W3Browse/all/cvcat.html Catalog Research served-by HEASARC TAP https://heasarc.gsfc.nasa.gov/xamin/vo/cone?showoffsets&table=cvcat& GET text/xml 180 99999 true 198.67083333 -87.52555556 0.0833333333333333 https://heasarc.gsfc.nasa.gov/xamin/vo/tap https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/getvotable.pl?name=cvcat GET text/xml https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/w3query.pl?tablehead=name=heasarc_cvcat&Action=More+Options&Action=Parameter+Search&ConeAdd=1 STAR CATALOG 0.0833333333333333 Optical public cvcat Cataclysmic Variables Catalog (2006 Final Edition) rosat_flag Flag Indicates Observed by ROSAT meta.code;obs char nullable ref_spectrum_flag Spectrum Reference Comment Flag meta.code;spect char nullable period_flag Flag Indicates Period Is Uncertain meta.code.error;time.period char nullable epoch Epoch of Position Coordinates time.epoch double nullable cluster_flag Flag Indicates Object Is in a Globular Cluster meta.code char nullable ref_spectrum Spectrum Reference meta.ref;spect char nullable "__y_ra_dec" System unit vector column double nullable "__row" System index column char nullable euve_flag Flag Indicates Observed by EUVE meta.code;obs char nullable ref_coord_flag Coordinate Reference Comment Flag meta.code;pos.eq char nullable pm_dec Proper Motion in Declination (arcsec/yr) arcsec/yr pos.pm;pos.eq.dec double nullable hst_flag Flag Indicates Observed by HST meta.code;obs char nullable lii Galactic Longitude degree pos.galactic.lon double nullable max_mag Maximum Magnitude phot.mag;stat.max float nullable dec Declination degree pos.eq.dec;meta.main double nullable "__z_ra_dec" System unit vector column double nullable min_mag_system System for Minimum Magnitude meta.code;instr.filter char nullable asca_flag Flag Indicates Observed by ASCA meta.code;obs char nullable alt_name Other Source Designation meta.id char nullable var_type Variable Classification src.class char nullable pm_ra Proper Motion in Right Ascension (arcsec/yr) arcsec/yr pos.pm;pos.eq.ra double nullable ref_var_type_flag Classification Reference Comment Flag meta.code;src.class char nullable max_mag_limit Flag Indicating Upper Limit meta.code;phot.mag;stat.max char nullable min_mag Minimum Magnitude phot.mag;stat.min float nullable ref_chart_flag Chart Reference Comment Flag meta.code char nullable iue_flag Flag Indicates Observed by IUE meta.code;obs char nullable nova_year Year of Outburst (for Novae) time.epoch char nullable heao2_flag Flag Indicates Observed by HEAO-2 meta.code;obs char nullable ginga_flag Flag Indicates Observed by Ginga meta.code;obs char nullable ref_period Period Reference meta.ref;time.period char nullable gcvs_name GCVS Designation meta.id char nullable ref_coord Coordinate Reference meta.ref;pos.eq char nullable name Catalog Designation meta.id;meta.main char nullable max_mag_system System for Maximum Magnitude meta.code;instr.filter char nullable heao1_flag Flag Indicates Observed by HEAO-1 meta.code;obs char nullable ref_pm_flag Proper Motion Reference Comment Flag meta.code;pos.pm char nullable pm_ra_error Error in Proper Motion in Right Ascension (arcsec/yr) arcsec/yr stat.error;pos.pm;pos.eq.ra double nullable pm_dec_error Error in Proper Motion in Declination (arcsec/yr) arcsec/yr stat.error;pos.pm;pos.eq.dec double nullable ariel5_flag Flag Indicates Observed by Ariel V meta.code;obs char nullable period Period (days) d time.period double nullable class Browse Object Classification src.class short nullable exosat_flag Flag Indicates Observed by EXOSAT meta.code;obs char nullable min_mag_limit Flag Indicating Lower Limit meta.code;phot.mag;stat.min char nullable bii Galactic Latitude degree pos.galactic.lat double nullable ref_var_type Classification Reference meta.ref;src.class char nullable ref_chart Chart Reference meta.ref;pos char nullable "__x_ra_dec" System unit vector column double nullable ra Right Ascension degree pos.eq.ra;meta.main double nullable ref_pm Proper Motion Reference meta.ref;pos.pm char nullable