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General Catalogue of Variable Stars: What's new.
General Catalogue of Variable Stars

Sternberg Astronomical Institute, Moscow, Russia




GCVS Research Group:                                                                       

     What's new       


            Apr. 30, 2005


April 13, 2004

  • The imroved Query form for GCVS: Search by Type of the variability!


                Jan. 30, 2004

      The difference between the version June 2003 and January 2004 consists in the following:

    1. For 3500 stars of the GCVS Volume III (Sge, Ser, Sco, Scl, Sct, Sex) we have already introduced more accurate coordinates.


      Sep., 21, 2003 

      • New version !!

        GENERAL CATALOGUE OF VARIABLE STARS VERSION 1.4, VOL. IV

        The fourth volume of the revised version 1.4 of the General Catalogue of Variable Stars (GCVS) contains cross-identification tables. The tables contain all GCVS (including extragalactic variables from vol.V), NSV (New catalogue of Suspected Variable stars) and Supplement to the NSV stars as well as stars from the name-lists of variable stars nos. 67 - 77; it also makes it possible to find out identifications between the GCVS and the NSV catalogue.

        The differences between the computer-readable version 1.3 and 1.4 of vol. IV are the following :

      • Stars of the 77th name-list of variable stars have been added.
      • All necessary corrections found during 1 year elapsed since the publication of the version 1.3 have been added.


      July 17, 2003

      An Electronic Version of Volume II of the General Catalogue of Variable Stars with Improved Coordinates

      We present a new electronic version of the second volume of the General Catalogue of Variable Stars (GCVS), fourth edition, which contains data on 13480 variable stars in Cygnus - Orion. This version incorporates the name lists of variable stars from no.67 to no.76 for the same constellations. The main distinctive feature of the new version is that it provides improved equatorial J2000.0 coordinates for 13446 stars (including those for 5052 stars corrected for proper motions). These are based on identifications with positional catalogs using finding charts and on our new measurements.


      June 24, 2003

        The difference between the version March 2002 and June 2003 consists in the following:

      1. For 13447 stars of the GCVS Volume II (Cygnus - Orion), we have already introduced corrected, more accurate coordinates.
      2. The 77th Name-List for Variable Stars has been incorporated in the common tables of the GCVS (1152 stars).
      3. All necessary corrections found during this period have been added.


        May 24, 2003

        • New Name-list !! :

          THE 77TH NAME-LIST OF VARIABLE STARS (files)

          We present the next regular Name-List of variable stars containing information on 1152 variable stars recently designated in the system of the General Catalogue of Variable Stars.


        May, 22, 2002

        • New version !!

          GENERAL CATALOGUE OF VARIABLE STARS VERSION 1.3, VOL. IV

          The fourth volume of the revised version 1.3 of the General Catalogue of Variable Stars (GCVS) contains cross-identification tables. The tables contain all GCVS (including extragalactic variables from vol.V), NSV (New catalogue of Suspected Variable stars) and Supplement to the NSV stars as well as stars from the name-lists of variable stars nos. 67 - 76; it also makes it possible to find out identifications between the GCVS and the NSV catalogue.

          The differences between the computer-readable version 1.2 and 1.3 of vol. IV are the following :

        • Stars of the 75th and 76th name-lists of variable stars have been added.
        • The cross-identification tables now additionally include the lists of Hipparcos (Hip) variable stars.
        • All necessary corrections found during 3 years elapsed since the publication of the version 1.2 have been added.


        April 19, 2002

        An Electronic Version of Volume I of the General Catalogue of Variable Stars with Improved Coordinates

        We present a new electronic version of the first volume of the General Catalogue of Variable Stars (GCVS), fourth edition, which contains data on 10558 variable stars in Andromeda - Crux . This version incorporates the name lists of variable stars from no.67 to no.76 for the same constellations. The main distinctive feature of the new version is that it provides improved equatorial J2000.0 coordinates for 10351 stars (including those for 4592 stars corrected for proper motions). These are based on identifications with positional catalogs using finding charts and on our new measurements.

        The version also includes a file of remarks to the first GCVS volume and a preliminary version of the file of bibliographic references to the entire fourth edition of the GCVS. Apart from a complete update of the positional information, the new version incorporates all the other corrections that were found to be necessary after the first GCVS volume was published (1985).


        March 6, 2002

          The difference between the version January 2001 and March 2002 consists in the following:

        1. For 6593 stars of the GCVS Volume II (Cygnus - Orion), we have already introduced corrected, more accurate coordinates. The current version of the coordinates for these stars is of a preliminary nature, and we would be grateful for remarks and corrections.
        2. All necessary corrections found during this period have been added.

        December 10, 2001

          The difference between the version December 2001 and January 2001 consists in the following:

        1. The 76th Name-List for Variable Stars has been incorporated in the common tables of the GCVS (1406 stars).
        2. We present a new version of the improved equtarial positions J2000 for variable stars from I Volum GCVS in the constellations of Andromeda - Crux (10329 stars).
        3. All necessary corrections found during this period have been added.


        November 22, 2001

      • There is the preliminary version of the cross-identifications GCVS and Hipparcos catalog. Query form for GCVS


        July, 9, 2001

        • New Name-list !! :

          THE 76TH NAME-LIST OF VARIABLE STARS (files)

          We present the next regular Name-List of variable stars containing information on 1406 variable stars recently designated in the system of the General Catalogue of Variable Stars.


        June, 15, 2001

      • Query form for GCVS: Search by positions J2000!


        January 15, 2001

          The difference between the version December 1999 and January 2001 consists in the following;

        1. The 75th Name-List for Variable Stars has been incorporated in the common tables of the GCVS.
        2. The preliminary version of the textual files (references and remarks contains in the first three volumes of the printed catalog have been added.
        3. All necessary corrections found during this period have been added.


        May, 26, 2000

        • New coordinates :

          We present a preliminary version of the improved equtarial positions J2000 for variable stars from GCVS in the constellations of Cassiopeia - Crux (3488 stars) and for 586 stars from NSV.


        March, 30, 2000

        • New Name-list !! :

          THE 75TH NAME-LIST OF VARIABLE STARS (files)

          We present the next regular Name-List of variable stars containing information on 916 variable stars recently designated in the system of the General Catalogue of Variable Stars.


        December 9, 1999

          The difference between the version May 1998 and December 1999 consists in the following;

        1. The 74rd special Name-List for Hipparcos Variable Stars has been incorporated in the common tables of the GCVS.
        2. The improved equatorial positions (B1950, J2000) for variable stars in the constellations of Aquila - Carina have been added.
        3. All necessary corrections found during this period have been added.


        October, 20, 1999

      • New Query form for GCVS.


        October, 5, 1999

      • New information:
        April, 23, 1999

      • New version !!


        April, 22, 1999

        • New version !!

          GENERAL CATALOGUE OF VARIABLE STARS VERSION 1.2, VOL. IV

          The fourth volume of the revised version 1.2 of the General Catalogue of Variable Stars (GCVS) contains cross-identification tables. The tables contain all GCVS (including extragalactic variables from vol.V), NSV (New catalogue of Suspected Variable stars) and Supplement to the NSV stars as well as stars from the name-lists of variable stars nos. 67 - 74; it also makes it possible to find out identifications between the GCVS and the NSV catalogue.

          The differences between the computer-readable version 1.1 and 1.2 of vol. IV are the following :

          Stars of the 73th and 74th name-lists of variable stars and stars of the Supplement to the NSV have been added.


        March, 15, 1999

          NEW CATALOGUE OF SUSPECTED VARIABLE STARS. SUPPLEMENT - PRELIMINARY VERSION

          The difference between the versions December 1998 and March 1999 consists in the following:

        • All necessary corrections found during this period have been added (more then 80 corrections).
        • In the course of the preparation of a new GCVS 4.2 version we improve coordinates for many GCVS variables, including those from the Name-lists. Please note that some stars of the NSVS catalogue may be found identical to GCVS stars, with their new positions. GCVS identifications are presented in the last column of the file nsvs.dat.

          Notice the data of the NSVS version you use!

        • The stars NSV 17813-15 in the current version are not the same as NSV 17813-15 in the December version.
        • We are grateful to GCVS users who inform us about errors revealed in our catalogues.


        January, 19, 1999

        • New Name-list !! :

          THE 74TH SPECIAL NAME-LIST OF VARIABLE STARS

          We selected Hipparcos variables satisfying GCVS criteria and designated 3157 objects as GCVS stars. The 74th Name-list is the largest Name-list in the history of the GCVS.


        December 19, 1998


        November 5, 1998

        May 6, 1998

          The difference between the version November 1997 and May 1998 consists in the following;

        1. The 73rd Name-List of Variable Stars has been incorporated in the common tables of the GCVS and of the Name-Lists of variable stars Nos.67-73 .
        2. The improved equatorial positions (B1950, J2000) for variable stars in the constellations of Antlia, Apus, Aquarius and Aries have been added.
        3. Full description of the Variability types have been added.
        4. All necessary corrections found during this period have been added.

        April 13, 1998

        • The improved equatorial positions (B1950, J2000) for variable stars in the constellations of Antlia and Apus have been added. These positions have been incorporated in the present data set.

        March 19, 1998

        November 19, 1997

        1. Our new ftp address : ftp://ftp.sai.msu.su/pub/groups/cluster/gcvs/gcvs
        2. Our new Web address : /groups/cluster/gcvs
        3. Several corrections to the 73rd Name-list of Variable Stars Kazarovets E.V., Samus N.N., IBVS No.4471, 1997: The variable star V 390 Lac is actually NL Lac, this was not revealed because of the then-adopted coordinates for NL Lac being seriously in error. Instead "V 353 Pup = NSV 03431, not 03731" should be "V 353 Pup = NSV 03731, not 03431". < /EM >
        4. We have started preparation of an electronic release GCVS 4.2 which will contain improved light elements, classifications etc. along with sufficiently accurate positional information. The first approach to this project has resulted in improved equatorial positions (B1950, J2000) for variable stars in the constellation of Andromeda, including the stars from the GCVS proper plus the stars from the subsequent Name-lists, with a new standard of positional accuracy, to 1 second of arc. These positions have been incorporated in the present data set.

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