The large quasar reference frame (LQRF) - An optical representation of the ICRS

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Volume 505 / No 1 (October I 2009)

A&A, 505 1 (2009) 385-404

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Table 2:

Comparison between the models for the local astrometric solution^a.
Solution	$\overline{\Delta\alpha \cos\delta}$	$\sigma_{\Delta\alpha \cos \delta}$	$\overline{\Delta\delta}$	$\sigma_{\Delta\delta}$
3 ${\rm rd}$ degree	+42	126	-25	140
2 ${\rm nd}$ degree	+43	127	-23	136
1 ${\rm st}$ degree	+61	110	-34	120
0 degree	+42	126	-34	119
offset	+56	118	-45	130
Solution	$\overline{\Sigma _X}$	$\sigma_{\Sigma X}$	$\overline{\Sigma _Y}$	$\sigma_{\Sigma Y}$
3 ${\rm rd}$ degree	137	63	127	64
2 ${\rm nd}$ degree	134	66	125	64
1 ${\rm st}$ degree	135	68	120	65
0 degree	133	68	117	64

^a In the top half of the table, the average corrections and their standard deviations are presented. In the bottom half, the average internal error in the solutions and their dispersions are presented. All values are in milli-arcsecs. The difference between the ``0 degree'' and the ``offset'' solutions is just that in the former residuals larger than 2.5 $\sigma$ are removed and the solution is recalculated.

Source LaTeX | All tables | In the text

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