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astro-ph.IM2025
Evolution of the radio source position uncertainties in radio astrometric catalogs over the past three decades
Zinovy Malkin
In this paper, progress in improving the coordinates uncertainty of extragalactic radio sources derived from astrometric and geodetic VLBI observations is investigated. For this pu…
astro-ph.IM2025
Improving source positions in the OCARS catalog: A first approach
Zinovy Malkin
OCARS (Optical Characteristics of Astrometric Radio Sources) is a compiled catalog of various additional data associated with astrometric radio sources whose coordinates have been…