ICRF3

This dataset provides the equatorial coordinates of extragalactic radio sources observed at J2000.0 using Very Long Baseline Interferometry (VLBI) across the S/X, K, and X/Ka frequency bands, with the S/X-band remaining the conventional reference for geodesy, Earth orientation, and satellite orbit determination. Number of objects S/X 4536 K 824 X/Ka 678 AccuracyThe uncertainties in the coordinates are provided for each object and are given in the following ranges: Right Ascension [s]Declination ["] S/X 0.00000202 - 0.008992650.0000303 - 0.2507685 K 0.00000245 - 0.000865950.0000613 - 0.0118579 X/Ka 0.00000291 - 0.004460180.0000470 - 0.0735481