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J/A+AS/121/243      GPM1 catalogue (Rybka+ 1997)
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GPM1 - a catalog of absolute proper motions of stars with respect to galaxies
     Rybka S.P., Yatsenko A.I.
    <Astron. Astrophys. Suppl. Ser. 121, 243 (1997)>
    =1997A&AS..121..243R      (SIMBAD/NED BibCode)
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ADC_Keywords: Proper motions
Keywords: astrometry - reference systems

Description:
    GPM1 is the first version of the General Compiled Catalogue of
    Absolute Proper Motions for a sample of HIPPARCOS stars, derived with
    respect to galaxies within the plan called Catalogue of Faint Stars
    (KSZ, Deutch A.N., 1952IAUT....8..789D). The programme was
    proposed for several observatories of the former Soviet Union, China,
    Rumania and Spain. There are some resulting individual catalogues of
    absolute proper motions of stars compiled at five observatories (Kiev,
    Pulkovo, Moscow, Tashkent and Shanghai). The principal aim of the GPM1
    construction was to provide absolute proper motions of stars to
    determine the rotation of the HIPPARCOS system. The GPM1 catalogue
    comprises absolute proper motions for 977 stars in 180 areas north of
    -25 degrees of declination. The mean square error is 8mas/yr on
    average. The standard errors differ from one star to another one
    depending on the number and quality of individual catalogues. They
    have been computed and presented for each star. For a single GPM1
    field the absolute zero-point error of linking proper motions to the
    galaxies is 3mas/yr on average. The error of such a kind depends on
    the number and compactness of the galaxies available in each field. In
    addition to absolute proper motions and their mean errors, the
    catalogue gives the following data for each star: right ascension,
    declination, epoch for position, V-magnitude and number, copied from
    HIC. The stars were also identified with the objects of the
    Smithsonian Astrophysical Observatory Star Catalogue (SAO) list.
    Positions are given for equator and equinox J2000.0 on the system of
    FK5. They were presented to identify the GPM1 stars with those from
    other catalogues. The data file is sorted by J2000.0 right ascensions.

File Summary:
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  FileName      Lrecl  Records   Explanations
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ReadMe             80        .   This file
table2             77      977   The GPM1 catalogue
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See also:
    HIPPARCOS Input Catalogue (HIC)  =Catalogue <I/196>
    SAO Star Catalog J2000 (SAO)     =Catalogue <V/131>

Byte-by-byte Description of file: table2
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   Bytes Format Units    Label       Explanations
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   2-  4  I3    ---      GPM1        GPM1 running number.
   6-  9  I4    ---      No          [1/7479] Region number (1)
  11- 16  I6    ---      HIC         HIPPARCOS Input Catalogue (HIC) number
                                      (Catalogue <I/196>)
  18- 23  F6.3  mag      Vmag        V magnitude, copied from HIC.
  25- 26  I2    h        RAh         Right Ascension J2000 (hours)
  27- 28  I2    min      RAm         Right Ascension J2000 (minutes)
  29- 34  F6.3  s        RAs         Right Ascension J2000 (seconds)
      36  A1    ---      DE-         Declination J2000 (sign)
  37- 38  I2    deg      DEd         Declination J2000 (degrees)
  39- 40  I2    arcmin   DEm         Declination J2000 (minutes)
  41- 45  F5.2  arcsec   DEs         Declination J2000 (seconds)
  48- 49  I2    yr       Epoch-1900  ? The epoch for the position. (2)
  51- 56  F6.1  mas/yr   pmRA        Absolute proper motion in RA,
                                     multiplied by cos(Dec)
  58- 63  F6.1  mas/yr   pmDE        Absolute proper motion in Dec.
  66- 69  F4.1  mas/yr e_pm          Mean error of proper motion.
  72- 77  I6    ---      SAO         [1/258997]? SAO Catalogue number
                                      (Catalogue <V/131>)
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Note (1): Numbers from 1 to 205 are given according to the KSZ plan,
           numbers larger than 205 are NGC numbers of centre galaxies.
Note (2): The epoch for the position: blank for J2000.0;
                           otherwise (Epoch-1900), copied from HIC.
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Acknowledgements: Svetlana P. Rybka <rybka@mao.gluk.apc.org>
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(End)                                         Patricia Bauer [CDS]   06-May-1996