**Table 3:** Astrometric data.
ICRF	MJD	$\Delta\alpha*$	$\sigma_{\alpha*}$	$\Delta\delta$	$\sigma_{\delta}$	$d_{\alpha*}$	$d_{\delta}$	$e_{\alpha*}$	$e_{\delta}$	N
name
0312-770	52 648.02	-23	21	47	21	10	5	47	11	5
0431-512	52 649.02	-238	183	333	174	24	11	0	0	3
0511-220	52 650.05	-56	47	141	61	11	3	0	0	3
0521-365	52 650.03	-36	27	-21	27	10	12	9	35	5
0530-727	52 648.05	43	44	5	46	6	5	79	27	4
0528-250	52 649.04	-7	10	5	10	4	4	24	38	6
0537-286	52 650.07	17	9	-14	9	6	6	45	37	7
0614-349	52 649.10	107	20	-190	19	18	15	11	105	4
0622-441	52 650.10	38	32	43	34	8	7	47	32	4
0629-418	52 649.11	1	22	-8	18	18	12	13	9	4
0637-752	52 650.12	-27	14	3	14	5	4	90	37	6
0646-306	52 648.09	-99	10	-21	10	4	3	154	33	6
0700-465	52 649.15	12	6	-23	5	6	16	28	39	9
0700-465	52 650.19	12	6	-23	5	6	16	31	26	10
0743-673	52 648.17	123	12	-43	15	2	3	53	84	8
0809-493	52 650.30	24	8	-34	8	5	16	52	48	14
0823-500	52 648.20	34	16	-10	17	4	6	56	71	11
0823-223	52 649.18	-25	11	21	11	5	8	60	122	18
0834-201	52 650.23	38	16	56	16	5	10	40	53	14
0842-754	52 650.32	18	12	31	13	8	5	50	43	15
0919-260	52 650.24	53	11	-53	11	6	1	42	46	9
0920-397	52 649.23	45	7	27	6	13	4	56	61	18
0925-203	52 649.21	-28	20	44	19	2	3	44	14	5
1048-313	52 649.25	41	12	-41	12	8	14	58	28	6
1101-325	52 649.27	-13	25	-58	20	8	4	86	102	4
1101-536	52 648.22	52	6	9	6	2	6	60	65	27
1104-445	52 648.25	-32	19	18	21	6	4	42	43	7
1105-680	52 648.28	25	5	-10	5	3	7	51	50	33
1116-462	52 648.32	35	4	-57	4	18	6	43	53	9
1116-462	52 650.35	35	4	-57	4	18	6	48	50	13
1129-580	52 649.33	-15	6	-6	6	8	6	59	52	22
1144-379	52 649.29	4	16	-49	15	7	7	53	30	6

All positional derived data are given in milliarcseconds [mas]. All ICRF positions are taken from Ma et al. (1998). $\alpha*$ stands for $\alpha{\rm cos}~\delta$ . Column 1: ICRF quasar identification; Col. 2: Modified Julian Date of the observation; Cols. 3 and 5: positional differences from the astrometric analysis of the observations made in the photometry mode, in the sense near-IR minus ICRF, in right ascension and declination, respectively. Near-IR positions are taken as the mean of those obtained from the J, H, and $K_{\rm s}$ bands; Cols. 4 and 6: precisions of the observed near-IR positions of the ICRF quasars, in right ascension and declination, respectively, as derived from the astrometric analysis of the observations made in the photometry mode. These precisions are the combined errors from each of the photometric filters; Cols. 7 and 8: standard deviations of the positional measurements in the J, H, and $K_{\rm s}$ filters in right ascension and declination, respectively; Cols. 9 and 10: mean of the standard deviations, as obtained from each of the photometric filters, of the differences observed minus calculated to the reference (UCAC2) stars in the photometry mode at the epoch of the observations; Col. 11: number of reference (UCAC2) stars used in the astrometric analysis of the observations made in the photometry mode.

Source LaTeX | All tables | In the text

	1 Introduction
	2 Observations
	3 Image analysis and data reduction
	4 Photometric results
	5 Astrometric results
	6 Discussion
	7 Conclusion
	References
	Online Material