Astronomy and Astrophysics – Astronomy
Scientific paper
May 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000ivsg.conf..314s&link_type=abstract
International VLBI Service for Geodesy and Astrometry: 2000 General Meeting Proceedings, p. 314
Astronomy and Astrophysics
Astronomy
Astronomical Catalogs, Very Long Base Interferometry, Astrometry, Astronomical Coordinates, Radio Sources (Astronomy), Geodetic Surveys
Scientific paper
A new catalogue of radio source coordinates is constructed as a combination of catalogues derived from NEOS and CORE VLBI programs for the period 1997-1999 using ERA package. One of the main goals of this study was an attempt to investigate systematic differences between source coordinates derived from geodetic VLBI observations made by various sets of stations and estimate a possible proper or apparent motion of radio sources. At the first stage nine catalogues were obtained from observations of NEOS-A, CORE-A and CORE-B programs for 1997, 1998 and 1999. At the next stage six catalogues were derived: three catalogues for years 1997, 1998, 1999 using all observations for these years and three catalogues for each program NEOS-A, CORE-A, and CORE-B for the whole period 1997-1999. Finally, after analysis of differences between catalogues and time variations of source coordinates a combined catalogue was made.
Malkin Zinovy
Sokolskaya Maria
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