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ICRF-Ext.2: Second Maintenance and Extension of the ICRF

The ICRF maintenance and extension catalogue ICRF-Ext.2 contains updated coordinates of the 608 ICRF extragalactic radio sources and of 109 new sources. VLBI data obtained between 1999 May and the end of 2002 May together with older data were used.

ContentsEquatorial coordinates of 717 extragalactic radio sources in J2000.0 observed with VLBI.
Accuracy

Uncertainties are given in the file.

R.A. [s]0.000017 - 0.017806
Dec. ["]0.00025 - 0.20675
Public accesshttp://hpiers.obspm.fr/icrs-pc/newwww/index.php
FormatFor format description see contents of the data file.
Documentationhttp://hpiers.obspm.fr/icrs-pc/newwww/icrf/index.php
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