Astronomical Data Center

ADCADC/CDS Standard Document for Catalog:
/catalogs/1/1181/

The following is the "ReadMe" document that describes this ADC catalog. You can access the files described here in three ways:

1. Use the ADC Data Viewer Suite to visualize the data. [preview
2. Get the data files via anonymous FTP. (See Note.) [ftp


I/181       Second General Catalogue of Stars                          (Lu 1992)
================================================================================
The Second General Catalogue of Stars Observed with the Photoelectric Astrolabes
(GCPA2)
    Lu L.
    <Bull. Inf. CDS 40, 9 (1992)>
    =1992BICDS..40....9L
The Second General Catalogue of Stars Observed with the Photoelectric Astrolabes
(GCPA2) 
    Lu, L.
    <Publ. of the Beijing Astron. Obs., No. 17 (1991)>
    =1991PBeiO..17....1L
================================================================================
ADC_Keywords: Fundamental catalog; Positional data; Stars, fundamental

Description:
  On  the basis  of  the data observed with the photoelectric astrolabes in
  China observed  during the period from 1982 to 1990, the Second general cata-
  logue of stars  have been compiled. With magnitudes ranging from 0.1  to 7.3,
  the general catalogue consists of  2606  stars.  The  declination are from -3
  degree to +69 degree. In the catalogue there are  980 FK5 stars and  1626  GC
  stars.  The  mean precisions  of  position corrections in right ascension and
  declination are  3.8 ms  and  0.064", respectively.  The  mean  epoch  of the
  catalogue is 1988.0.

File Summary:
--------------------------------------------------------------------------------
 FileName     Lrecl  Records   Explanations
--------------------------------------------------------------------------------
ReadMe           80        .   This file
gcpa2.dat        77     2606   Catalog Data
--------------------------------------------------------------------------------

Byte-by-byte Description of file: gcpa2.dat
--------------------------------------------------------------------------------
   Bytes Format   Units   Label    Explanations
--------------------------------------------------------------------------------
   1-  5   I5     ---     FK5     *? Number of FK5 or FK4supp or GC
   6- 10   F5.2   mag     mag      ? Visual magnitude
  11- 13   A3     ---     Sp       Spectral type
  15- 16   I2     h       RAh     *? += Right Ascension J2000.0 hours
  18- 19   I2     min     RAm     *? Right Ascension J2000.0 minutes
  21- 26   F6.3   s       RAs     *? Right Ascension J2000.0 seconds
      28   A1     ---     DE-     *Declination J2000.0 sign
  29- 30   I2     deg     DEd     *? Declination J2000.0 degrees
  32- 33   I2     arcmin  DEm     *? Declination J2000.0 arcminutes
  35- 39   F5.2   arcsec  DEs     *? Declination J2000.0 arcseconds
  41- 46   F6.1   ms      corRA    ? Position correction of RA at EpRA
  47- 52   F6.1   ms      e_corRA  ? Mean error of the correction on RA
  53- 58   F6.2   a       EpRA     ? Mean epoch of observation on RA (-1900)
  60- 65   F6.1   0.01as  corDE    ? Position correction of DE at EpDE
  66- 71   F6.1   0.01as  e_corDE  ? Mean error of the correction on DE
  72- 77   F6.2   a       EpDE     ? Mean epoch of observation on DE (-1900)
--------------------------------------------------------------------------------
Note on FK5:
   Number of FK5 or FK4supp or GC after 980 records
   (record 981 is blank)

Note on RA* DE*:
   Equator and Equinox of J2000.0

Remarks and Modifications:
   by exchange from Beijing

Acknowledgement:
   The content of this ReadMe is from an unsigned Intro file (25-Feb-1992).
   It was modified to the current CDS standard at ADC by J.A. Watko (MAY-1996).

References:
   Lu Lizhi 1991, Publications of the Beijing Astronomical Observatory, No. 17.
================================================================================
(End)                                  Julie Anne Watko [SSDOO/ADC]  15-Aug-1996

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