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	6.439	22 08 45.14088	-00 27 25.9920	0825-19563615	332.188087	-00.457220			19.3	18.9	1954.569

%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	6.579	22 08 45.14616	-00 27 25.8516	EO1146-0238051	332.188109	-00.457181	19.41		1	4.16	4.4	0.12	20.17		2	3.69	7.3	0.76
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%3cEM%3e1&%3cFONT%20COLOR=%27#CD5B45%27>%206.579&%3cFONT%20COLOR=%27#CD5B45%27>22%2008%2045.14616&%3cFONT%20COLOR=%27#CD5B45%27>-00%2027%2025.8516&EO1146-0238051&332.188109&-00.457181&19.41&%20&%201&%20%20%204.16&%20%20%204.4&%200.12&20.17&%20&%202&%20%20%203.69&%20%20%207.3&%20%200.76&%20%3cBR%3e">\Ahref='VizieR-5?-ref=VIZ66433b1911d639&-out.add=.&-source=I/267/out&APM-ID===EO1146-0238383&-out.orig=o' class='full'2 8.22622 08 45.02808-00 27 36.4608EO1146-0238383332.187617-00.46012820.00L 0      21.12   2 4.68 6.3 1.12   %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	6.402	22 08 45.12816	-00 27 25.7508	0895-0610649	332.188034	-00.457153	139	274	1976.8	0	0	5	19.95	19.85	19.42	19.17	18.59

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

%22>Jmag
magHmag
magKmag
magR

1 6.40022 08 45.127992-00 27 25.750080895-0664692..332.1880333-00.4571528B 0.0 0.0 0.0 0.019.420B    19.170B         %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	6.772	22 08 45.14904	-00 27 25.5528	SBEG006518	332.188121	-00.457098	1990.634	19.23	20.05			3	2.57	0.17

%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	6.312	22 08 45.12288	-00 27 25.7940	332.188012	-00.457165	-2.3	-9.1			19.95	19.42	19.85	19.17	18.59	5	0
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%3cEM%3e1&%3cFONT%20COLOR=%27#CD5B45%27>%206.312&%3cFONT%20COLOR=%27#CD5B45%27>22%2008%2045.12288&%3cFONT%20COLOR=%27#CD5B45%27>-00%2027%2025.7940&332.188012&-00.457165&%20%20%20%20-2.3&%20%20%20%20-9.1&%20&%20&19.95&19.42&19.85&19.17&18.59&%205&%200%3cBR%3e">\EndTABLESORT

Note:

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	6.271	22 08 45.11805	-00 27 25.7584	332.187992	-00.457155	0.069	0.088	20.052	0.300	19.232	0.300	19.211	0.093	18.186	0.119	2003.8100	2003.8100	-2.3	5.7	-9.1	5.7

%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"	RAICRS deg	e_ mas	DEICRS deg	e_ mas	ID	Type	pmRA mas/yr	e_ (...)	pmDE [****ClosingBrace(s)Inserted****]
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pmDE

%20

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

Nobs

Dt
yr

Rmag
mag

Bmag
mag

Nmag
mag

Vmag
mag

Jmag
mag

Hmag
mag

Kmag
mag

1 6.41022 08 45.127344-00 27 25.71698332.1880306 201.00-00.4571436 199.0047544+00065183 8.1 7.9 -3.8 7.8 436.063 19.232 20.052           %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	4.677	22 08 46.8351841437	-00 25 30.621000265	SBEG089812	332.18781600000	-00.45788210000	2321232089812	2010.560	4																					16.262	16.245	12.424	9.099
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1	4.677	22 08 46.8351841437	-00 25 30.621000265	SBEG089812	332.18781600000	-00.45788210000	2321232089812	2010.560	4																					16.262	16.245	12.424	9.099

%22>\Ahref='VizieR-5?-ref=VIZ66433b1911d639&-out.add=.&-source=I/353/gsc242&-c=332.18793265800%20-00.45708875721,eq=ICRS,rs=2&-out.orig=o' class='full'2 6.23222 08 45.1038379200-00 27 25.519525945SBEG075764332.18793265800-00.45708875721 23212320757642012.0003                               18.005 17.458 16.977            21.69821.836       3 6.36522 08 45.1270893860-00 27 25.765208017SBEG006518332.18802722000-00.45716138000 2321232065182012.0733  20.51510020.05290019.232100          21.15821.28020.76320.57320.25720.0708 17.689 16.783 16.880                 2.573 0.168160.2 %0a%0a%0a%3cP%3e%0a%3cFONT%20SIZE=%27-1%27%3e%3cEM%3e%3cFONT%20COLOR=%27#0000FF%27>%3cB%3eNote:%20SDSS%20is%20also%20available%20from%20http://www.sdss.org/%3cP%3e%0a

Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	mode	cl	SDSS	m_	zsp	umag mag	e_ mag	gmag mag	e_ mag	rmag mag	e_ mag	imag mag	e_ mag	zmag mag	e_ mag	RA_ICRS deg	DE_ICRS deg	ObsDate yr	Q
1	6.436	22 08 45.12984	-00 27 25.7220	1	3	J220845.12-002725.7			20.932	0.230	19.925	0.033	19.220	0.028	18.916	0.031	18.546	0.084	332.188039	-00.457143	2001.7884	3

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