J/A+AS/132/233 PHA I observations (Xu+ 1998)
Continuous declination system set up by observations of photoelectric astrolabe
Mark I in Irkutsk. The first results of international cooperation between CSAO
and VS NIIFTRI.
Xu J., Li D., Liu J., Cheng H., Zhang Z., Raschotin S.I.,
Emeliyanov V.A., Kaplenko V.V., Zalutsky V.T.
<Astron. Astrophys. Suppl. Ser. 132, 233 (1998)>
=1998A&AS..132..233X 1998A&AS..132..233X (SIMBAD/NED BibCode)
ADC_Keywords: Fundamental catalog ; Positional data
Keywords: astrolabe - star catalogue
Abstract:
The Photoelectric Astrolabe Mark I (PHA I) has been revised with a new
combined prism which could work as an almucantar with zenith distance
of 45 degree, to measure continuous declinations at the latitude of
Irkutsk, Russia (φ=52 degree). The PHA I has been working at the
astronomical base of VS NIIFTRI in Irkutsk since Nov. 1995, based on
an international cooperation agreement of near 4 years for star
catalogue and EOP measurements. The first observing program was ended
in June 1997, giving corrections in both right ascension and
declination to 200 stars with no blind zone in declination
determination, which most astrolabe catalogues in the world usually
would have.
File Summary:
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FileName Lrecl Records Explanation
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ReadMe 80 . This file
appendix.dat 83 200 The first preliminary catalog of PHA I
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See also:
I/149 : Fifth Fundamental Catalogue (FK5) Part I (Fricke+, 1988)
I/175 : Fifth Fundamental Catalogue (FK5) - Extension (Fricke+ 1991)
Byte-by-Byte Description of file: appendix.dat
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Bytes Format Units Label Explanations
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3- 6 I4 --- FK5 No. of FK5 star
9- 11 F3.1 mag Vmag V magnitude
13- 14 A2 --- SpType Spectral type
17- 18 I2 h RAh Right ascension at observational epoch (J2000)
19- 20 I2 min RAm Right ascension at observational epoch (J2000)
21- 26 F6.3 s RAs Right ascension at observational epoch (J2000)
28 A1 --- DE- Declination sign
29- 30 I2 deg DEd Declination at observational epoch (J2000)
31- 32 I2 arcmin DEm Declination at observational epoch (J2000)
33- 37 F5.2 arcsec DEs Declination at observational epoch (J2000)
39- 45 F7.4 s DRA DRA (observation - FK5)
48- 53 F6.4 s e_RAs rms uncertainty on RA
56- 60 F5.3 arcsec ERA1 15*e_RA*cos(declination)
62- 67 F6.3 arcsec DDE DDE (observation - FK5)
70- 74 F5.3 arcsec e_DEs rms uncertainty on declination
76- 81 F6.3 yr Ep-1900 mean epoch of observation (1900+)
83 I1 --- Flag [1/2] 1--basic star, 2--catalogue star
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Acknowledgements: Xu Jiayan
(End) Patricia Bauer [CDS] 31-Mar-1998