GCVS/X-gal ivo://nasa.heasarc/gcvsegvars NASA/GSFC HEASARC Artiukhina et al.; Samus et al. 2026-05-29 NASA/GSFC HEASARC help desk heasarc-vo at athena.gsfc.nasa.gov Extragalactic Variable Star The General Catalog of Variable Stars (GCVS) is the only reference source on all known variable stars. This database is based on the electronically-readable version as distributed by the Sternberg Astronomical Institute and Institute of Astronomy (Russian Acad. Sci.), Moscow. It is the catalog of extragalactic variable stars, an updated version of the list contained in the GCVS (4th edition), Volume V. The total number of entries in this database is 10979 variable stars in 35 stellar systems (including the Magellanic Clouds, the Andromeda Galaxy, etc.). These variables include 144 stars now considered to be non-members of the galaxies in whose fields they lie, and 92 more stars that are possible non-members. The present improved electronic version of the GCVS 4th Edition, Volumes I-V, combined with the Name-Lists of Variable Stars Nos. 67 - 77, is also available from the Sternberg Institute via anonymous ftp to <a href="ftp://ftp.sai.msu.su/pub/groups/cluster/gcvs/gcvs/">ftp://ftp.sai.msu.su/pub/groups/cluster/gcvs/gcvs/</a> and more information is available via the Web at <a href="http://www.sai.msu.su/groups/cluster/gcvs/gcvs/">http://www.sai.msu.su/groups/cluster/gcvs/gcvs/</a>. This online version of the GCVS Vol. V Catalog of Extragalactic Variable Stars was created by the HEASARC in January 2005 based on <a href="https://cdsarc.cds.unistra.fr/ftp/cats/II/250">CDS Catalog II/250</a>, table evs_cat.dat. The latter was itself based on on an electronically-readable version that was distributed by the Sternberg Astronomical Institute and Institute of Astronomy (Russian Acad. Sci.), Moscow. This is a service provided by NASA HEASARC . https://heasarc.gsfc.nasa.gov/W3Browse/all/gcvsegvars.html Catalog Research served-by HEASARC TAP https://heasarc.gsfc.nasa.gov/xamin/vo/cone?showoffsets&table=gcvsegvars& GET text/xml 180 99999 true 12.4152001 -76.0764135 0.0166666666666667 https://heasarc.gsfc.nasa.gov/xamin/vo/tap https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/getvotable.pl?name=gcvsegvars GET text/xml https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/w3query.pl?tablehead=name=heasarc_gcvsegvars&Action=More+Options&Action=Parameter+Search&ConeAdd=1 STAR CATALOG 0.0166666666666667 Optical public gcvsegvars General Catalog of Variable Stars (GCVS4.2): Extragalactic Varia name Variable Star Designation meta.id;meta.main char nullable ra Right Ascension degree pos.eq.ra;meta.main double nullable dec Declination degree pos.eq.dec;meta.main double nullable limit_min_mag Limit Flag for Minimum Magnitude char nullable min_mag Magnitude at Minimum Brightness or Amplitude double nullable max_mag Magnitude at Maximum Brightness float nullable variability_type Type of Variability char nullable "__x_ra_dec" System unit vector column double nullable "__y_ra_dec" System unit vector column double nullable "__z_ra_dec" System unit vector column double nullable "__row" System index column char nullable ref_chart Reference for Chart or Photograph char nullable galaxy_star_num Variable Star Number within the Galaxy short nullable limit_period Code for Upper or Lower Limits of the Period char nullable nova_year Year of Outburst of Nova short nullable bii Galactic Latitude degree pos.galactic.lat double nullable min_mag_flag Uncertainty Flag on Minimum Magnitude char nullable ref_star Reference for Study of the Star char nullable epoch Epoch (Julian Days) d double nullable remark_flag Flag Indicates a Remark char nullable alt_name_1 Alternative Designation in Ref_Star meta.id char nullable period Period of the Variable Star d double nullable non_member Non-member Note Flag char nullable mag_system Code for Photometric System for Magnitudes char nullable eclipse_var_note Note for Eclipsing Variable char nullable class Browse Object Classification src.class short nullable rise_eclipse_time Rising Time or Duration of Eclipse percent short nullable nova_year_flag Uncertainty Flag on Nova Year char nullable spect_type Spectral Type src.spType char nullable position_flag Position Accuracy Flag char nullable gcvs_nsv_name GCVS or NSV Designation char nullable rise_eclipse_time_flag Uncertainty Flag on Rising Time or Duration of Eclipse char nullable lii Galactic Longitude degree pos.galactic.lon double nullable max_mag_flag Uncertainty Flag on Maximum Magnitude char nullable epoch_flag Uncertainty Flag on Epoch char nullable alt_name_2 Alternative Designation in Ref_Chart meta.id char nullable galaxy_code Galaxy Numeric Code short nullable period_flag Uncertainty Flag on Period char nullable