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	0.100	11 07 00.16752	+53 34 28.8912	1425-07607851	166.750698	+53.574692			14.0	13.1	1955.120
2	5.001	11 06 59.95800	+53 34 24.1608	1425-07607844	166.749825	+53.573378			18.8	18.2	1955.120

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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	0.433	11 07 00.14400	+53 34 29.1612	EO0673-0127536	166.750600	+53.574767	13.23		1	17.11	19.8	0.16	14.20		1	13.13	21.1	0.97
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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	0.187	11 07 00.15528	+53 34 28.9308	N21202215195	166.750647	+53.574703	1991.255	13.47	0.40	14.71	0.39	0	7.47	0.15

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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	0.469	11 07 00.16752	+53 34 29.2620	1435-0209156	166.750698	+53.574795	230	79	1978.3	4	8	5	13.70	13.07	13.28	12.27	12.39
2	0.816	11 07 00.19872	+53 34 28.0200	1435-0209157	166.750828	+53.574450	999	999	1955.1	0	0	2	18.36	17.97
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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	0.467	11 07 00.167328	+53 34 29.25984	1435-0214467	YM	166.7506972	+53.5747944	B	4.0	7.0	8.0	2.0	17.030	Y	16.020	Y	12.270	B	15.627	14.846	14.211
2	0.816	11 07 00.198672	+53 34 28.02000	1435-0214468	..	166.7508278	+53.5744500	B	0.0	0.0	0.0	0.0	18.360	o			17.970	e
3	5.089	11 07 00.372672	+53 34 33.54996	1435-0214469	..	166.7515528	+53.5759861	B	0.0	0.0	0.0	0.0	19.240	o			18.270	B
4	5.125	11 06 59.916672	+53 34 24.18996	1435-0214466	..	166.7496528	+53.5733861	B	0.0	0.0	0.0	0.0	19.540	o			18.610	e
5	5.139	11 07 00.430656	+53 34 24.21012	1435-0214470	..	166.7517944	+53.5733917	B	0.0	0.0	0.0	0.0	20.320	o			18.850	e

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>	\BegDIVclass='sort-down ' </A>
dec 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	0.189	11 07 00.15552	+53 34 28.9344	N7JD005195	166.750648	+53.574704	1991.255	13.47	14.71	15.16	13.95	3	7.47	0.15

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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	0.329	11 07 00.15264	+53 34 29.0856	166.750636	+53.574746	-1.9	-0.2	15.627	14.211	18.36		17.97			3	1
2	0.334	11 07 00.15144	+53 34 29.0856	166.750631	+53.574746	-5.9	7.1	15.627	14.211	13.70	13.28	13.07	12.27	12.39	6	0
3	4.707	11 07 00.24768	+53 34 33.4488	166.751032	+53.575958	-32.2	-0.2			19.24		18.45	18.27		3	0

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