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J/PAZh/24/93        M 31 reference catalog (Shokin+ 1998)
A reference catalog for accurate position determinations in the region of M 31
       Shokin Yu.A., Kulagina N.B.
      <Pis'ma Astron. Zh. 24, 93 (1998)>
      =1998PAZh...24...93S      (SIMBAD/NED BibCode)
      =1998AstL...24...69S
ADC_Keywords: Fundamental catalog ; Positional data ; Magnitudes


Abstract:
    We compiled a catalog of 421 references 12-15mag stars for determining
    accurate positions of objects in the region of M 31. We also compiled
    a star chart, which is provided as an Internet Web service, for
    identifying the catalogued reference stars on the plates of observers.
    AQccurate positions and a finding chart are given for 33 reference
    15-17mag stars in a 10'x12' field near the center of M 31.

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
catalog.dat       39      421   Reference catalogue
table2.dat        39       33   Equatorial coordinates (B1950) of stars at the
                                  center of M31


See also:
   http://nostromo.sai.msu.su/m31/ : The star chart


Byte-by-byte Description of file: catalog.dat

   Bytes Format Units   Label     Explanations

   1-  3  I3    ---     [SK98]    [1/421] Sequential number
   7- 11  F5.2  mag     Bmag      Photographic B magnitude (1)
      13  I1    h       RAh       Right ascension (1950)
  15- 16  I2    min     RAm       Right ascension (1950)
  18- 23  F6.3  s       RAs       Right ascension (1950)
      26  A1    ---     DE-       Declination sign
  27- 28  I2    deg     DEd       Declination (1950)
  30- 31  I2    arcmin  DEm       Declination (1950)
  33- 37  F5.2  arcsec  DEs       Declination (1950)

Note (1): The photoelectric magnitudes for stars Nos. 195, 298, 225, 254
           are from Arp, 1956AJ.....61...15A and
           for star 239 from de Vaucouleurs & Corwin, 1985ApJ...295..287D


Byte-by-byte Description of file: table2.dat

   Bytes Format Units   Label          Explanations

   1-  2  I2    ---     [SK98]Center   [1/33] Number of reference star
       6  I1    h       RAh            Right ascension (1950)
   8-  9  I2    min     RAm            Right ascension (1950)
  11- 16  F6.3  s       RAs            Right ascension (1950)
      20  A1    ---     DE-            Declination sign
  21- 22  I2    deg     DEd            Declination (1950)
  24- 25  I2    arcmin  DEm            Declination (1950)
  27- 31  F5.2  arcsec  DEs            Declination (1950)
  35- 38  A4    ---     GlC            Globular cluster name (1)

Note (1): Five objects in this table are globular clusters with numbers
           by Sargent et al., 1977AJ.....82..947S


History: Copied by ftp at http://nostromo.sai.msu.su/m31/

(End)   James Marcout, Patricia Bauer [CDS], Veta Avedisova [INASAN] 19-May-1998