Erratum to VCS catalogues
Group delays used for deribin sources positions is determined witht an
uknown number of ambiguities. Errors in resolving grou pdelay amobugiuities
may shift an estimate of position of the source from 1 mas to 1 deg.
If 8 or more observations were used in analysis, the probability of missing
an error in group delay ambiguity is negligible. However, if a source had
less than 8 used observations, the probability of this error may be
significant. Therefore, positions detrimed using less than 8 observations are
Re-analysis of all observations, including observations used in the
original catalgoues, revealed a number of sources with erroneous coordinates.
The latest reanalyses is the
Errors with respect to this solution, and update positions are listed
Sources with errors exceeding 100 mas:
Format of update files.
This page was prepared by
Last update: 2007.08.16_18:10:21