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	0.873	10 37 37.10136	+36 42 38.9916	1200-06554691	159.404589	+36.710831			19.8	18.9	1954.255

%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	0.369	10 37 37.09608	+36 42 38.4912	EO1032-0041542	159.404567	+36.710692	19.72		1	4.69	4.3	0.28	21.23		-1	-0.39	5.8	1.51
[****ClosingBrace(s)Inserted****]
">

%3cEM%3e1&%3cFONT%20COLOR=%27#CD5B45%27>%200.369&%3cFONT%20COLOR=%27#CD5B45%27>10%2037%2037.09608&%3cFONT%20COLOR=%27#CD5B45%27>%2b36%2042%2038.4912&EO1032-0041542&159.404567&%2b36.710692&19.72&%20&%201&%20%20%204.69&%20%20%204.3&%200.28&21.23&%20&-1&%20%20-0.39&%20%20%205.8&%20%201.51&%20%3cBR%3e">\Ahref='VizieR-5?-ref=VIZ663f08033c53c5&-out.add=.&-source=I/267/out&APM-ID===EO0731-0074074&-out.orig=o' class='full'2 1.27410 37 37.16136+36 42 39.1212EO0731-0074074159.404839+36.71086719.89   1 2.31 3.9 0.4221.22  -1 2.64 4.6 1.33   %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	1.002	10 37 37.09008	+36 42 39.1212	1267-0192783	159.404542	+36.710867	120	133	1977.2	0	0	5	20.84	19.42	20.40	19.33	18.61
2	2.662	10 37 36.92952	+36 42 39.8808	1267-0192781	159.403873	+36.711078	999	375	1989.1	0	0	2			19.24	20.06

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

Rmag

%22>%5cFONT SIZE=-1magr_

Jmag
magHmag
magKmag
magR

1 1.00110 37 37.090008+36 42 39.120121267-0196754..159.4045417+36.7108667B 0.0 0.0 0.0 0.020.400B    19.330B         2 2.66310 37 36.929328+36 42 39.880081267-0196752..159.4038722+36.7110778B 0.0 0.0 0.0 0.019.240B    20.060B         %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	0.887	10 37 37.07304	+36 42 38.9664	N97A000984	159.404471	+36.710824	1989.176	19.60	20.33	18.65		3	2.58	0.26

%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	0.787	10 37 37.07928	+36 42 38.8836	159.404497	+36.710801	-9.7	-6.9			20.84	20.40	19.42	19.33	18.61	5	0
[****ClosingBrace(s)Inserted****]
">

%3cEM%3e1&%3cFONT%20COLOR=%27#CD5B45%27>%200.787&%3cFONT%20COLOR=%27#CD5B45%27>10%2037%2037.07928&%3cFONT%20COLOR=%27#CD5B45%27>%2b36%2042%2038.8836&159.404497&%2b36.710801&%20%20%20%20-9.7&%20%20%20%20-6.9&%20&%20&20.84&20.40&19.42&19.33&18.61&%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	1.030	10 37 37.08858	+36 42 39.1480	159.404536	+36.710874	0.038	0.054	20.330	0.300	19.603	0.300	19.668	0.090	18.816	0.117	2003.3100	2003.3100	-9.7	5.4	-6.9	5.4

%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****]
">

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 1.10810 37 37.071419+36 42 39.19111159.4044642 89.00+36.7108864 87.0061078+00009844 -13.1 3.0 0.7 3.0 1145.025 19.603 20.330   18.648       %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	1.063	10 37 37.0936404465	+36 42 39.100966681	N97A000984	159.40449495000	+36.71087922000	12322112984	2013.673	3		20.927900	20.330700	19.603900						21.480	20.974	20.334	20.316	20.373	19.9927						17.466	17.033	12.616	9.074	22.667	21.449	2.584	0.265	59.9
[****ClosingBrace(s)Inserted****]
1	1.063	10 37 37.0936404465	+36 42 39.100966681	N97A000984	159.40449495000	+36.71087922000	12322112984	2013.673	3		20.927900	20.330700	19.603900						21.480	20.974	20.334	20.316	20.373	19.9927						17.466	17.033	12.616	9.074	22.667	21.449	2.584	0.265	59.9

%22>\EndTABLESORT

Note: SDSS is also available from http://www.sdss.org/