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I/16             Catalog of 3356 Faint Stars, 1950                (Larink+ 1955)
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Katalog von 3356 Schwachen Sternen fuer das Aequinoktium 1950
+89 degrees
   Larink J., Bohrmann A., Kox H., Groeneveld J., Klauder H.
   <Verlag der Sternwarte, Hamburg-Bergedorf (1955)>
   =1955QB6.L26........
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ADC_Keywords: Fundamental catalog; Positional data; Proper motions


Description:
   This catalog of 3356 faint stars was derived from meridian circle
   observations at the Bergedorf and Heidelberg Observatories. The
   positions are given for the equinox 1950 on the FK3 system. The stars
   are mainly between 8.0 and 10.0 visual magnitude. A few are brighter
   than 8.0 mag. The lower limit in brightness resulted from the visibility
   of the stars.

Introduction:
   All stars were observed at both the Heidelberg and Bergedorf
   Observatories. Normally, at each observatory, two observations were
   obtained with the clamp east and two with the clamp west. The mean
   errors are comparable for the two observatories with no significant
   systematic difference in the positions between them. The mean errors of
   the resulting positions should be approximated 0.011s/cos(dec) in right
   ascension and ).023" in declination.

   The proper motions were derived from a comparison with the catalog
   positions with the positions in the AGK2 and AGK2A with a 19 year
   baseline and from a comparison of new positions with those in Kuestner
   1900 with about a fifty year baseline.

   The magnitudes were taken from the AGK2. Most spectral types were
   determined by A. N. Vyssotsky. A few are from the Bergedorfer
   Spektraldurchmusterung.

File Summary:
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  FileName        Lrecl  Records   Explanations
--------------------------------------------------------------------------------
ReadMe             80        .   This file
catalog.dat        88     3356   The catalog
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Byte-by-byte Description of file: catalog.dat
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   Bytes Format Units       Label    Explanations
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   1-  4  I4    ---         ID       Catalog number
   5-  7  I3    ---         DMz      BD zone
   8- 11  I4    ---         DMn      BD number
  13- 16  F4.1  mag         mag      Photographic magnitude
  18- 20  A3    ---         Sp       Spectral class
  21- 22  I2    h           RAh      Right Ascension hours (1950)
  23- 24  I2    min         RAm      Right Ascension minutes (1950)
  25- 29  F5.2  s           RAs      Right Ascension seconds (1950)
  30- 37  F8.2  0.01s/a     Pr-RA1   First order precession in RA per century
  38- 45  F8.2  0.0001s2/a2 Pr-RA2   Second order precession in RA per century
  46- 50  F5.1  0.01s/a     pmRA     ?Proper motion in RA from AGK2 positions
  51- 54  F4.1  0.01s/a     pmRA2    ?Proper motion in RA from Kuestner positions
      55  A1    ---         DE-      Sign of declination (1950)
  56- 57  I2    deg         DEd      Declination degrees (1950)
  58- 59  I2    arcmin      DEm      Declination minutes (1950)
  60- 63  F4.1  arcsec      DEs      Declination seconds (1950)
  64- 70  F7.1  arcsec/ha   Pr-de1   First order precession in dec per century
  71- 76  F6.1  arcsec2/ha2 Pr-de2   Second order precession in dec per century
  77- 79  I3    arcsec/ha   pmdec    Proper motion in DE from AGK2 positions
  80- 82  I3    arcsec/ha   pmdec2   ?Proper motion in DE from Kuestner positions
  84- 87  F4.1  yr          epoch    Epoch of observation - 1900.0
      88  A1    ---         rem     *Note for star in printed catalog
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Note on rem:
   1 = ma (blend?)
   3 = pr (preceding)
   4 = seq (following)
   5 = bor (northern)
   6 = au (southern)
   * = other note in printed volume (All notes in the printed volume have not 
       been indicated in this version.) 
   the printed volume sometimes has additional information on the systems with
   numerical remarks.
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(End)               Nancy Grace Roman   [ADC/SSDOO]     Feb-1-1996