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J/AZh/81/1032       VLBI Position Measurements               (Titov, 2004)

Construction of a Celestial Coordinate Reference Frame from VLBI Data. Titov O.A. <Astron. Zh. 81, 1032 (2004)> =2004AZh....81.1032T =2004ARep...48..941T
ADC_Keywords: Radio sources ; Positional data ; VLBI Abstract: A large number (∼2 million) of VLBI observations have been reduced in order to re ne the measured coordinates of the observed radio sources. The data reduction was carried out in the OCCAM package using the least squares colocation method. Corrections to the coordinates of 642 objects were derived. The accuracy of the catalog is no worse than 0.2 milliseconds of arc for stable sources. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file catalog.dat 43 642 Corrected positions of 642 objects
See also: I/251 : VLBI International Celestial Reference Frame, ICRF (Ma+, 1997) J/A+A/312/1031 : Positions + proper motions of radio stars (Argyle+, 1996) J/A+A/355/398 : Celestial Ephemeris Origin definition (Capitaine+, 2000) J/A+AS/122/529 : Radio stars for linking Celestial Ref. Frame (Walter+ 1997) Byte-by-byte Description of file: catalog.dat
Bytes Format Units Label Explanations
1- 8 A8 --- Name Radio source designation 10- 11 I2 h RAh Right ascension (J2000.0) 13- 14 I2 min RAm Right ascension (J2000.0) 16- 24 F9.6 s RAs Right ascension (J2000.0) 29 A1 --- DE- Declination sign (J2000.0) 30- 31 I2 deg DEd Declination (J2000.0) 33- 34 I2 arcmin DEm Declination (J2000.0) 36- 43 F8.5 arcsec DEs Declination (J2000.0)
History: Copied at
(End) Patricia Vannier [CDS] 24-Feb-2005
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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