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	1.347	21 20 10.25544	-02 07 11.1432	0825-19148715	320.042731	-02.119762			19.9	18.4	1952.645

%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 mag	Mflag
1	2.083	21 20 10.29888	-02 07 10.7616	EO0575-0411527	320.042912	-02.119656	19.24		1	11.05	7.3	0.55	21.31		1	3.09	5.3	2.07
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%3cEM%3e1&%3cFONT%20COLOR=%27#CD5B45%27>%202.083&%3cFONT%20COLOR=%27#CD5B45%27>21%2020%2010.29888&%3cFONT%20COLOR=%27#CD5B45%27>-02%2007%2010.7616&EO0575-0411527&320.042912&-02.119656&19.24&%20&%201&%20%2011.05&%20%20%207.3&%200.55&21.31&%20&%201&%20%20%203.09&%20%20%205.3&%20%202.07&%20%3cBR%3e">\Ahref='VizieR-5?-ref=VIZ664415bd90587&-out.add=.&-source=I/267/out&APM-ID===EO0575-0411388&-out.orig=o' class='full'2 6.58521 20 09.90552-02 07 06.2004EO0575-0411388320.041273-02.11838920.00L 0      21.60  -1 0.36 4.1 1.60   %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 mag
1	0.346	21 20 10.19016	-02 07 11.3628	0878-0826647	320.042459	-02.119823	134	327	1975.0	-18	-4	5	21.21	18.60	19.72	19.02	18.59
2	1.513	21 20 10.26336	-02 07 10.9632	0878-0826649	320.042764	-02.119712	842	417	1974.6	0	0	3		19.11	19.75	19.00

%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_ [****ClosingBrace(s)Inserted****]
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r_

%22>Rmag
magr_

Jmag
magHmag
magKmag
magR

1 0.34421 20 10.189992-02 07 11.359920878-0872083..320.0424583-02.1198222B -18.0 4.0 -4.0 10.019.720B    19.020B         2 1.51421 20 10.263336-02 07 10.959960878-0872085..320.0427639-02.1197111B 0.0 0.0 0.0 0.019.750B    19.000B         %0a%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"	GSC2.3	RAJ2000 deg	DEJ2000 deg	Epoch yr	Fmag mag	jmag mag	Vmag mag	Nmag mag	Class	a pix	e
1	0.956	21 20 10.22544	-02 07 11.0496	SB9M004607	320.042606	-02.119736	1991.538	19.12	20.55			3	2.42	0.03

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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	0.426	21 20 10.19496	-02 07 11.3268	320.042479	-02.119813	-11.5	-9.7			21.21	19.72	18.60	19.02	18.59	5	0
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%3cEM%3e1&%3cFONT%20COLOR=%27#CD5B45%27>%200.426&%3cFONT%20COLOR=%27#CD5B45%27>21%2020%2010.19496&%3cFONT%20COLOR=%27#CD5B45%27>-02%2007%2011.3268&320.042479&-02.119813&%20%20%20-11.5&%20%20%20%20-9.7&%20&%20&21.21&19.72&18.60&19.02&18.59&%205&%200%3cBR%3e">\Ahref='VizieR-5?-ref=VIZ664415bd90587&-out.add=.&-source=I/317/sample&PPMXL===1349161379615903488' class='full'2 0.77421 20 10.15800-02 07 10.7184320.042325-02.119644 -30.3 -4.0      19.7519.11     2 0 %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	0.774	21 20 10.15800	-02 07 10.7181	320.042325	-02.119644	0.163	0.163	19.750	0.400	19.110	0.400	19.259	0.400	18.691	0.500	1967.5900	1967.5900	-30.3	10.9	-4.0	10.9
2	0.928	21 20 10.21940	-02 07 10.9503	320.042581	-02.119708	0.047	0.045	20.552	0.300	19.124	0.300	19.228	0.091	18.009	0.118	2004.7000	2004.7000	-11.5	5.6	-9.7	5.6

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Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	RAICRS deg	e_ mas	DEICRS deg	e_ mas	ID	Type	pmRA [****ClosingBrace(s)Inserted****]
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pmRA

%20

%22>%5cFONT SIZE=-1mas/yre_
(...)

pmDE
mas/yr

e_
(...)

Nobs

Dt
yr

Rmag
mag

Bmag
mag

Nmag
mag

Vmag
mag

Jmag
mag

Hmag
mag

Kmag
mag

1 0.40221 20 10.181923-02 07 11.12926320.0424247 149.00-02.1197581 54.0047370+00046074 -37.4 6.3 -1.4 2.3 538.892 19.124 20.552           %0a%0a%0a

Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	GSC2	RA_ICRS deg	DE_ICRS deg	objID	Epoch yr	Class	Gmag mag	OMag mag	Bjmag mag	Fpgmag mag	Epgmag mag	Npgmag mag	Umag mag	Bmag mag	Vmag mag	umag mag	gmag mag	rmag mag	imag mag	zmag mag	ymag mag	Jmag mag	Hmag mag	Ksmag mag	Zmag mag	Ymag mag	W1mag mag	W2mag mag	W3mag mag	W4mag mag	FUVmag mag	NUVmag mag	a pix	e pix	PA pix
1	0.496	21 20 10.1439432000	-02 07 11.141868000	SB9M074498	320.04226643000	-02.11976163000	2321002274498	2011.624	3											21.116			19.805	19.3144
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1	0.496	21 20 10.1439432000	-02 07 11.141868000	SB9M074498	320.04226643000	-02.11976163000	2321002274498	2011.624	3											21.116			19.805	19.3144

%22>\Ahref='VizieR-5?-ref=VIZ664415bd90587&-out.add=.&-source=I/353/gsc242&-c=320.04259991000%20-02.11975739000,eq=ICRS,rs=2&-out.orig=o' class='full'2 0.90421 20 10.2588158618-02 07 10.973679051SB9M004607320.04259991000-02.11975739000 2321002246072012.4853  20.76630020.55280019.124100          21.80221.27620.57619.91219.88319.3007 17.265 16.813 16.035   17.84915.99715.44611.924 8.887  22.797 2.420 0.031171.9 %0a%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

Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	WISE	RAJ2000 deg	DEJ2000 deg	eeMaj arcsec	eeMin arcsec	Im	W1mag mag	e_ mag	W2mag mag	e_ mag	W3mag mag	e_ mag	W4mag mag	e_ mag	Jmag mag	Hmag mag	Kmag mag	ccf	ex	var	d2M arcsec	2M
1	0.799	21 20 10.21145	-02 07 11.0052	J212010.21-020711.0	320.042548	-02.119724	0.442	0.403	Im	15.944	0.072	15.751	0.212	12.046		9.082					0000	0	1nnn		2M

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Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 [****ClosingBrace(s)Inserted****]
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%3cEM%3e%20%3cFONT%20COLOR=%27#CD5B45%27>_DEJ2000

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%22>%5cFONT SIZE=-1"d:m:s"RAJ2000
deg

DEJ2000
deg

FUV
mag

e_
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NUV
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e_
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r.fov
deg

b

Fafl

Nafl

Fexf

Nexf

Fr
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Nr
arcsec

1 2.13921 20 10.23914-02 07 09.6191320.042663-02.119339    22.751 0.472 0.3534571 0 0 0 0   8.49 %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	FUV mag	e_ mag	NUV mag	e_ mag	r.fov deg	b	Fafl	Nafl	Fexf	Nexf	Fr arcsec	Nr arcsec
1	1.115	21 20 10.15005	-02 07 10.3958	320.042292	-02.119554	23.161	0.456	22.228	0.198	0.362690	3	256	0	0	0	9.40	9.40

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