The 3 columns in color are computed by VizieR, and are not part of the original data.

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	1.049	00 43 05.11416	+83 17 51.6516	1725-00034204	010.771309	+83.297681			16.3	14.9	1952.639
2	3.005	00 43 05.23752	+83 17 49.7004	1725-00034207	010.771823	+83.297139			16.0	15.6	1952.639
3	6.605	00 43 04.26600	+83 17 46.2732	1725-00034189	010.767775	+83.296187			18.7	16.5	1952.639

%0a%0a%3cP%3e%0a%3cFONT%20SIZE=%27-1%27%3e%3cEM%3e%3cFONT%20COLOR=%27#0000FF%27>%3cB%3eNote:%20%3cB%3e%3cFONT%20COLOR=%27#CD5B45%27>%20The%20current%20version%20includes%20only%20the%20North%20%28POSS-I%20plates%29%3cP%3e%0a

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 [****ClosingBrace(s)Inserted****]
">

b-r

%22>%5cFONT SIZE=-1magMflag

1 2.52200 43 05.05272+83 17 50.1828EO0568-0258217010.771053+83.29727314.56   1 6.04 17.5 0.3816.40   1 27.75 15.0 1.83   %0a%0a%3cP%3e%0a%3cFONT%20SIZE=%27-1%27%3e%3cEM%3e%3cFONT%20COLOR=%27#0000FF%27>%3cB%3eNote:%20The%20construction%20of%20the%20%0a%3cB%3eGSC-II%20%0ais%20still%20in%20progress:%20this%0aversion%20has%20no%20proper%20motions,%20and%20the%20magnitude%20limits%20are%2018.5%20in%20F%20%28red%29%0aand%2019.5%20in%20J%20%28blue%29.%20The%20data%20are%20%3cB%3e%3cFONT%20COLOR=%27#0000CD%27>copyrighted,%20check%20%0athe%20%3cB%3edata%20use%20Policy.%0a%3cP%3e%0a

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	0.488	00 43 04.90752	+83 17 52.9764	N31001237676	010.770448	+83.298049	1996.640	15.74	0.41	17.19	0.42	3	5.68	0.25
2	1.481	00 43 05.22120	+83 17 51.2268	N31001235839	010.771755	+83.297563	1996.643	15.56	0.40	17.00	0.42	3	5.32	0.37
3	7.398	00 43 03.29928	+83 17 46.0392	N31001235838	010.763747	+83.296122	1996.643	17.36	0.40	18.21	0.42	3	3.68	0.20

%0a%0a%3cP%3e%0a%3cFONT%20SIZE=%27-1%27%3e%3cEM%3e%3cFONT%20COLOR=%27#0000FF%27>%3cB%3eNote:%20The%20%3cB%3eUSNO-B%20Catalog%20presents%20positions,%20proper%20motions,%20%0amagnitudes%20un%20blue,%20red%20and%20infrared,%20as%20well%20as%20star/galaxy%20estimators%0afor%201,045,175,762%20objects%20derived%20from%203,648,832,040%20separate%20observations.%0aThe%20data%20were%20taken%20from%20scans%20of%207,435%20Schmidt%20plates%0ataken%20from%20various%20sky%20surveys%20during%20the%20last%2050%20years.%3cBR%3e%0aUSNO-B1.0%20catalog%20was%20created%20by%20Dave%20Monet%20and%20collaborators%0aat%20http://www.nofs.navy.mil/data/fchpix/%20%3cBR%3e%0a%3cB%3e%3cFONT%20COLOR=%27#EE0000%27>%20Note%20that%20the%20star/galaxy%20estimators%20may%20be%20mixed%20up%0a%20in%20dense%20regions.%0a%3cP%3e%0a

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 [****ClosingBrace(s)Inserted****]
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Imag

%20

%22>%5cFONT SIZE=-1mag 1 1.90400 43 04.93200+83 17 50.83081732-0002204010.770550+83.297453 651621979.0 -4 -22516.5815.0215.0813.3411.98 2 5.51900 43 03.87744+83 17 47.64121732-0002202010.766156+83.2965671143691979.0 -12 24519.6216.4717.8516.1916.06 %0a%0a%3cP%3e%0a%3cFONT%20SIZE=%27-1%27%3e%3cEM%3e%3cFONT%20COLOR=%27#0000FF%27>%3cB%3eNote:%20The%20Naval%20Observatory%20Merged%20Astrometric%20Dataset%20%28NOMAD%29%20contains%0aastrometric%20and%20photometric%20data%20for%20over%201%20billion%20stars%20derived%20from%0athe%20Hipparcos%20%28I/239%29,%20Tycho-2%20%28I/259%29,%20UCAC2%20%28I/289%29,%20and%20USNO-B1.0%0a%28I/284%29%20catalogs%20for%20astrometry%20and%20optical%20photometry,%20supplemented%0aby%202MASS%20%28II/246%29%20near-infrared%20photometry.%3cBR%3e%0a%3cFONT%20SIZE=%27-1%27%3eAn%20efficient%20remote%20query%20program%20%3cB%3efindnomad1%20is%0aavailable%20in%20the%20cdsclient%20%0apackage,%20for%20Unix/Linux%20platforms%0a%3cP%3e%0a

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	1.904	00 43 04.932000	+83 17 50.83008	1732-0002226	YM	010.7705500	+83.2974528	B	-4.0	2.0	-22.0	5.0	18.350	Y	17.660	Y	13.340	B	15.401	14.692	14.089
2	4.316	00 43 05.814672	+83 17 48.54984	1732-0002228	YM	010.7742278	+83.2968194	Y	1.2	9.0	-33.6	9.0	17.910	Y	17.210	Y			15.612	14.733	14.266
3	5.520	00 43 03.877344	+83 17 47.64012	1732-0002223	..	010.7661556	+83.2965667	B	-12.0	3.0	24.0	12.0	17.850	B			16.190	B

%0a%0a%3cP%3e%0a%3cFONT%20SIZE=%27-1%27%3e%3cEM%3e%3cFONT%20COLOR=%27#0000FF%27>%3cB%3eNote:%20This%20version%20of%20the%20%0a%3cB%3eGSC-II%0ahas%20no%20proper%20motions,%20but%20the%20limits%20on%20brightness%20which%20existed%20on%0a%20%28F<18.5,%20B_j<19.5%29%20were%20removed.%0a%25The%20data%20are%20%3cB%3e%3cFONT%20COLOR=%27#0000CD%27>copyrighted,%20check%0a%25the%20%3cB%3edata%20use%20Policy.%0a%3cP%3e%0a

Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	[****ClosingBrace(s)Inserted****]
">

%22d:m:s%22&%">\BegDIVclass='sort-down ' </A>stringGSC2.3

RAJ2000
deg

DEJ2000
deg

Epoch
yr

Fmag
mag

jmag
mag

Vmag
mag

Nmag
mag

Class

a
pix

e

1 0.49000 43 04.90776+83 17 52.9800NAAJ007676010.770449+83.2980501996.64015.7417.19  14.823 5.68 0.25 2 1.47700 43 05.22120+83 17 51.2304NAAJ005839010.771755+83.2975641996.64315.5617.00    3 5.32 0.37 3 7.39400 43 03.29928+83 17 46.0428NAAJ005838010.763747+83.2961231996.64317.3618.2115.6616.993 3.68 0.20 %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	0.833	00 43 04.74096	+83 17 52.2384	010.769754	+83.297844	-12.9	16.4	15.402	14.089	16.58	15.08	15.02	13.34	11.98	6	1
2	5.570	00 43 03.92424	+83 17 47.5512	010.766351	+83.296542	-10.6	24.2			19.62	17.85	16.47	16.19	16.06	5	0

%0a%0a

Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	ID	RAICRS deg	DEICRS deg	pmRAp mas/yr	pmDEp mas/yr	pmRAx mas/yr	pmDEx mas/yr	Fmag mag	Bjmag mag	Vmag [****ClosingBrace(s)Inserted****]
">

Vmag

%20

%22>%5cFONT SIZE=-1magNmag
mag

Jmag
mag

e_
mag

Hmag
mag

e_
mag

Kmag
mag

e_
mag

2Mkey

Bmag
mag

Rmag
mag

Fld

dT
yr

fg

fs

M

1 7.86200 43 03.17019+83 17 45.6322XPM 346-0002839010.763209+83.296009 -41.08 -13.84 -40.60 -13.3917.36218.21215.66316.98916.142 0.12514.747  15.218 0.176 79529076618.716.5 347.17778800M %0a%0a%3cP%3e%0a%3cFONT%20SIZE=%27-1%27%3e%3cEM%3e%3cFONT%20COLOR=%27#0000FF%27>%3cB%3eNote:%20%3cP%3e%0a

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	0.834	00 43 04.74094	+83 17 52.2382	010.769754	+83.297844	0.064	0.067	17.185	0.300	15.735	0.300	15.978	0.400	14.845	0.500	1991.7600	1991.7600	-12.9	3.8	16.4	3.8
2	1.352	00 43 05.21673	+83 17 51.3554	010.771736	+83.297599	0.400	0.400	16.996	0.300	15.563	0.300	15.805	0.400	14.684	0.500	1996.6400	1996.6400	-2.3	10.1	37.9	18.5
3	5.570	00 43 03.92424	+83 17 47.5509	010.766351	+83.296542	0.103	0.103	18.212	0.300	17.362	0.300	17.551	0.400	16.830	0.500	1979.0400	1979.0400	-10.6	4.8	24.2	4.8

%0a%0a%3cP%3e%0a%3cFONT%20SIZE=%27-1%27%3e%3cEM%3e%3cFONT%20COLOR=%27#0000FF%27>%3cB%3eNote:%20%3cP%3e%0a

Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	URAT1	RAICRS deg	DEICRS deg	Epoch yr	f.mag [****ClosingBrace(s)Inserted****]
">

f.mag

%20

%22>%5cFONT SIZE=-1mage_
mag

pmRA
mas/yr

pmDE
mas/yr

Jmag
mag

Hmag
mag

Kmag
mag

Bmag
mag

Vmag
mag

gmag
mag

rmag
mag

imag
mag

1 0.76800 43 04.659186+83 17 52.72925867-001421010.7695894+83.29794722013.70516.691 0.048 5.4 -8.715.40214.69214.089           2 2.34500 43 05.066242+83 17 50.35890867-001422010.7711093+83.29732192013.82116.232 0.077                     3 4.38700 43 05.820650+83 17 48.55907867-001424010.7746367+83.29681362013.67616.802 0.045 11.8 -2.215.61314.73414.266           4 7.76800 43 03.172073+83 17 45.62016867-001418010.7631681+83.29604062013.69317.530 0.052 -1.5 9.216.14214.74715.218           %0a%0a

Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	RA_ICRS deg	e_ mas	DE_ICRS deg	e_ mas	Source	Plx mas	pmRA mas/yr	pmDE mas/yr	RADEcor	Dup	<FG> e-/s	e_ e-/s	<Gmag> mag	Var
1	0.936	00 43 04.606224779	+83 17 52.80643296	010.7691926032	8.327	+83.2980017869	5.390	567170119567279872				0.079	0	2.6706e+02	8.0616e+00	19.458	NOT_AVAILABLE
2	4.414	00 43 06.034138268	+83 17 48.57513306	010.7751422428	28.789	+83.2968264259	13.689	567170123861868160				-0.238	0	3.8613e+02	2.1746e+01	19.058	NOT_AVAILABLE
3	4.453	00 43 05.921247297	+83 17 48.46385676	010.7746718637	6.887	+83.2967955158	5.970	567170123861867904				-0.599	0	3.5377e+02	5.0765e+00	19.153	NOT_AVAILABLE
4	7.839	00 43 03.112093804	+83 17 45.70915608	010.7629670575	0.509	+83.2960303211	0.263	567170123861868288				-0.198	0	7.9923e+02	3.5362e+00	18.268	NOT_AVAILABLE

%0a%0a%0a%3cP%3e%0a%3cFONT%20SIZE=%27-1%27%3e%3cEM%3e%3cFONT%20COLOR=%27#0000FF%27>%3cB%3eNote:%20%3cP%3e%0a