Note: USNO-A2.0 contains 526,280,881 sources, and is based on a re-reduction of the Precision Measuring Machine (PMM) scans from POSS-I O and E plates (>=-18°) and SRC-J and ESO-R plates (<=-20°). USNO-A2.0 was created by Dave Monet () and collaborators at Flagstaff Station, U.S. Naval Observatory.
The major difference between USNO-A2.0 and its previous version USNO-A1.0 is that A1.0 used the Guide Star Catalog as its reference frame whereas A2.0 uses the ICRF as realized by the USNO ACT catalog (Urban et al. 1997). The VizieR search engine uses an on-line compressed version (3.6Gbytes) which was generated at CDS.

Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	USNO-A2.0	RAJ2000 deg	DEJ2000 deg	ACTflag	Mflag	Bmag mag	Rmag mag	Epoch yr
1	7.101	19 32 31.51488	+62 15 59.5332	1500-06919504	293.131312	+62.266537			14.2	13.9	1953.745

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Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	APM-ID	RAJ2000 deg	DEJ2000 deg	rmag mag	l_	rClass	rStel	rDiam arcsec	rEll	bmag mag	l_	bClass	bStel	bDiam arcsec	b-r mag	Mflag
1	7.470	19 32 31.55400	+62 15 59.7816	EO0545-0081513	293.131475	+62.266606	12.11		1	15.81	29.2	0.54	13.75		2	29.12	40.5	1.63
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Note: The construction of the GSC-II is still in progress: this version has no proper motions, and the magnitude limits are 18.5 in F (red) and 19.5 in J (blue). The data are copyrighted, check the data use Policy.

Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	GSC2.2	RA(ICRS) deg	DE(ICRS) deg	Epoch yr	Rmag mag	e_ mag	Bjmag mag	e_ mag	Class	a pix	e
1	7.000	19 32 31.50096	+62 15 59.4900	N011300115172	293.131254	+62.266525	1991.669	12.33	0.43	13.37	0.42	3	12.18	0.59

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Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	USNO-B1.0	RAJ2000 deg	DEJ2000 deg	e_RAJ2000 mas	e_DEJ2000 mas	Epoch yr	pmRA mas/yr	pmDE mas/yr	Ndet	B1mag mag	R1mag mag	B2mag mag	R2mag mag	Imag mag
1	0.721	19 32 30.66408	+62 15 54.5400	1522-0324086	293.127767	+62.265150	305	598	1965.9	0	0	3	19.16	16.66			16.27
2	4.330	19 32 30.20544	+62 15 52.8516	1522-0324084	293.125856	+62.264681	999	999	1981.6	0	0	4	17.22		17.56	18.20	16.89
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Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	NOMAD1	YM	RAJ2000 deg	DEJ2000 deg	r	pmRA mas/yr	e_ (...)	pmDE mas/yr	e_ (...)	Bmag mag	r_	Vmag mag	r_	Rmag mag	r_	Jmag mag	Hmag mag	Kmag mag	R
1	0.721	19 32 30.664008	+62 15 54.54000	1522-0329787	..	293.1277667	+62.2651500	B	0.0	0.0	0.0	0.0	19.160	o			16.660	e
2	4.331	19 32 30.205344	+62 15 52.85016	1522-0329785	..	293.1258556	+62.2646806	B	0.0	0.0	0.0	0.0	17.560	B			18.200	B
3	4.999	19 32 30.538656	+62 15 59.50008	1522-0329786	..	293.1272444	+62.2665278	B	-42.0	6.0	30.0	38.0	18.620	B			16.810	e
4	6.281	19 32 29.985336	+62 15 51.59016	1522-0329782	..	293.1249389	+62.2643306	B	0.0	0.0	0.0	0.0	17.950	B			17.050	B
5	6.677	19 32 31.416000	+62 15 59.63004	1522-0329789	YM	293.1309000	+62.2665639	B	-16.0	4.0	-2.0	4.0	16.980	Y	15.500	Y	11.630	B	14.201	13.163	12.893
6	8.967	19 32 29.670000	+62 15 50.04000	1522-0329781	..	293.1236250	+62.2639000	B	22.0	8.0	-4.0	11.0	18.510	B			18.290	B
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6	8.967	19 32 29.670000	+62 15 50.04000	1522-0329781	..	293.1236250	+62.2639000	B	22.0	8.0	-4.0	11.0	18.510	B			18.290	B

%22>\EndTABLESORT

Note: This version of the GSC-II has no proper motions, but the limits on brightness which existed on GSC2.2 (F<18.5, B_j<19.5) were removed.

Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	GSC2.3	RAJ2000 deg	DEJ2000 deg	Epoch yr	Fmag mag	jmag mag	Vmag mag	Nmag mag	Class	a pix	e
1	7.003	19 32 31.50120	+62 15 59.4936	N14X015172	293.131255	+62.266526	1991.669	12.33	13.37	14.48	11.93	3	12.18	0.59

%0a%0a

Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	RAJ2000 deg	DEJ2000 deg	pmRA mas/yr	pmDE mas/yr	Jmag mag	Kmag mag	b1mag mag	b2mag mag	r1mag mag	r2mag mag	imag mag	No	fl
1	0.631	19 32 30.67320	+62 15 54.8388	293.127805	+62.265233	2.6	5.7			19.16		16.66		16.27	3	0
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Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	RAJ2000 deg	DEJ2000 deg	e_RAJ2000 (...)	e_DEJ2000 arcsec	magBJ mag	e_ mag	magRF mag	e_ mag	magG mag	e_ mag	magGrvs mag	e_ mag	alphaEpoch yr	deltaEpoch yr	pmRA mas/yr	e_ (...)	pmDE mas/yr	e_ (...)
1	0.631	19 32 30.67320	+62 15 54.8394	293.127805	+62.265233	0.133	0.133	19.160	0.400	16.660	0.400	16.686	0.400	14.962	0.500	1965.9300	1965.9300	2.6	7.4	5.7	7.4
2	4.743	19 32 30.54451	+62 15 59.2446	293.127269	+62.266457	0.133	0.133	18.620	0.400	16.810	0.400	17.029	0.400	15.673	0.500	1966.3300	1966.3300	-42.9	7.5	19.4	7.5
3	6.240	19 32 30.00721	+62 15 51.4190	293.125030	+62.264283	0.133	0.133	17.950	0.400	17.050	0.400	17.246	0.400	16.490	0.500	1978.9500	1978.9500	15.6	7.4	-9.3	7.4
4	7.007	19 32 31.47423	+62 15 59.6952	293.131143	+62.266582	0.004	0.005	13.365	0.300	12.333	0.300	15.062	0.080	13.853	0.110	2006.3900	2006.3900	-13.0	4.0	4.8	4.0
5	8.036	19 32 29.66566	+62 15 52.3190	293.123607	+62.264533	0.133	0.115	17.560	0.400	18.200	0.400	17.991	0.400	18.409	0.500	1979.9600	1979.9600	-84.8	7.6	-72.0	7.1
6	9.040	19 32 29.65891	+62 15 50.0260	293.123579	+62.263896	0.133	0.133	18.510	0.400	18.290	0.400	18.336	0.400	18.085	0.500	1977.9200	1977.9200	17.1	7.4	-0.6	7.4

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