Astronomical Data Center
ADC/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:
I/181 Second General Catalogue of Stars (Lu 1992)
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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
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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:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
gcpa2.dat 77 2606 Catalog Data
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Byte-by-byte Description of file: gcpa2.dat
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Bytes Format Units Label Explanations
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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)
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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.
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(End) Julie Anne Watko [SSDOO/ADC] 15-Aug-1996
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