A celestial reference frame derived from observations with the Very Long Baseline Interferometry Global Observing System

Open Access

Table 7

Statistics for difference in Δα* and Δδ for four CRF solutions with respect to VIE2023-VG CRF (i.e., zwd30gr180).

					no. obs.>50				no. obs.>25				no. obs.>2
	w.mean		wrms		Mean		rms		Mean		rms		Mean		rms
Solution	α*	δ	α*	δ	α*	δ	α*	δ	α*	δ	α*	δ	α*	δ	α*	δ
zwd10gr180	0	1	11	20	2	11	44	101	2	0	59	170	7	−22	185	517
zwd10gr60	0	0	12	21	6	9	54	121	6	4	77	163	20	6	252	823
zwd10gr20	−1	−1	13	23	9	7	64	144	9	7	100	192	16	−13	274	899
zwd05gr10	−5	−6	25	34	7	6	112	185	10	9	132	274	34	38	569	1752

Notes. The mean and rms were calculated for three subgroups of sources corresponding to the minimum number of observations (50, 25, and 2). All values are in μas.

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