Image Details
Caption: Figure 7.
Position uncertainties of R.A. α and decl. δ for all 195 ICRF2-Gaia transfer sources. GSFC solution 2011b vs. GSFC solution 2015a. Some sources in category 4 are not in the plot because of their large uncertainties (see Table 3): 6 sources in the α plot, 11 sources in the δ plot. The dotted lines indicate the 200 and 100 μas thresholds.
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