Raw position errors from 2006a_astro solution for all sources
Formal uncertainties reported by Solve. Came from SNR and additive reweighting
throuth the error propagation law. The vertical axis runs over the
number of sources. The horisontal axis runs over formal errors in mas.
Raw position errors from 2006a_astro solution for ICRF-1 sources
Formal uncertainties reported by Solve. Came from SNR and additive reweighting
throuth the error propagation law. The vertical axis runs over the
number of sources. The horisontal axis runs over formal errors in mas.
Position errors from 2006a_astro solution with traditional reweighting
Position errors after aplying reweiting
Err = sqrt ( 1.5*σ)2 +
(0.25 mas)2 )
The vertical axis runs over the number of sources. The horisontal axis runs
over formal errors in mas.
Position errors from 2006a_astro solution with traditional reweighting
for the sources from ICRF-1
Position errors after aplying reweiting
Err = sqrt ( 1.5*σ)2 +
(0.25 mas)2 )
The vertical axis runs over the number of sources. The horisontal axis runs
over formal errors in mas.
Position errors from 2006a_astro solution with advanced reweighting
Position errors after aplying reweiting
Err = sqrt ( 1.5*σ)2 +
(b(δ)2 )
where b(δ) varies in the range [0.2, 0.7]mas depending on declination.
Position errors statistics
The number of sources with the major error semi-axis less than the limit
of 0.1 mas, 0.3 mas, and 1.0 mas:
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