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	0.315	15 58 19.55544	+46 55 40.7100	1350-08755070	239.581481	+46.927975			19.2	17.9	1955.298

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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	0.281	15 58 19.56216	+46 55 40.6632	EO1404-0227364	239.581509	+46.927962	17.53		2	8.11	11.8	0.38	19.79		-1	2.36	6.8	2.25
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%3cEM%3e1&%3cFONT%20COLOR=%27#CD5B45%27>%200.281&%3cFONT%20COLOR=%27#CD5B45%27>15%2058%2019.56216&%3cFONT%20COLOR=%27#CD5B45%27>%2b46%2055%2040.6632&EO1404-0227364&239.581509&%2b46.927962&17.53&%20&%202&%20%20%208.11&%20%2011.8&%200.38&19.79&%20&-1&%20%20%202.36&%20%20%206.8&%20%202.25&%20%3cBR%3e">\Ahref='VizieR-5?-ref=VIZ663aac7d31e8f1&-out.add=.&-source=I/267/out&APM-ID===EO1404-0227197&-out.orig=o' class='full'2 7.39315 58 20.00736+46 55 46.8228EO1404-0227197239.583364+46.92967320.00L 0      21.62  -1 0.29 3.5 1.62   %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	0.243	15 58 19.56048	+46 55 40.8972	N1321303758	239.581502	+46.928027	1989.185	18.07	0.39	19.08	0.43	3	5.33	0.38

%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	0.344	15 58 19.55208	+46 55 40.9620	1369-0288621	239.581467	+46.928045	33	167	1978.5	4	2	5	18.95	18.12	18.82	18.46	17.69
2	6.490	15 58 19.97016	+46 55 45.9804	1369-0288623	239.583209	+46.929439	177	375	1991.3	0	0	2			19.90	19.82
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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	0.344	15 58 19.552008	+46 55 40.95984	1369-0292193	Y.	239.5814667	+46.9280444	B	4.0	1.0	2.0	5.0	18.350	Y			18.460	B
2	6.488	15 58 19.969992	+46 55 45.98004	1369-0292195	..	239.5832083	+46.9294389	B	0.0	0.0	0.0	0.0	19.900	B			19.820	B
3	7.256	15 58 20.032656	+46 55 46.44984	1369-0292196	..	239.5834694	+46.9295694	B	30.0	0.0	18.0	4.0	20.980	B			20.480	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"	GSC2.3 [****ClosingBrace(s)Inserted****]
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GSC2.3

%22>RAJ2000
degDEJ2000
degEpoch
yrFmag
magjmag
magVmag
magNmag
magClass

a
pixe

1 0.24115 58 19.56072+46 55 40.9008N60J000758239.581503+46.9280281989.18518.0719.0818.2418.173 5.33 0.38 2 7.28815 58 20.05104+46 55 46.3332N60J000761239.583546+46.9295371993.31319.96      3 1.96 0.35 %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	0.346	15 58 19.55016	+46 55 40.7856	239.581459	+46.927996	0.9	4.5			18.95	18.82	18.12	18.46	17.69	5	0
2	7.070	15 58 20.02608	+46 55 46.2648	239.583442	+46.929518	25.8	21.0				20.98	19.49	20.48		3	0

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

mag&%">\BegDIVclass='sort-down ' </A>dece_
magmagGrvs
mage_
magalphaEpoch
yrdeltaEpoch
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mas/yre_
(...)pmDE
mas/yre_
(...) 1 0.41315 58 19.54628+46 55 40.6810239.581443+46.927967 0.019 0.02019.078 0.30018.070 0.30018.840 0.08317.828 0.1122001.39002001.3900 0.9 5.4 4.5 5.4 2 6.61115 58 19.99695+46 55 45.9158239.583321+46.929421 0.096 0.09320.980 0.40019.961 0.30020.304 0.11219.340 0.1352001.39002001.3900 25.8 7.4 21.0 7.4 %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 mas/yr	e_ (...)	Nobs	Dt yr	Rmag mag	Bmag mag	Nmag mag	Vmag mag	Jmag mag	Hmag mag	Kmag mag
1	0.651	15 58 19.521446	+46 55 40.69819	239.5813394	40.00	+46.9279717	104.00	56947+0000758	4	2.2	1.8	0.5	4.6	9	42.055	18.070	19.078	18.165	18.240

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Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	GSC2	RA_ICRS deg	DE_ICRS deg	objID	Epoch yr	Class	Gmag [****ClosingBrace(s)Inserted****]
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Gmag

%20

%22>%5cFONT SIZE=-1magOMag
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pix

1 0.41915 58 19.5477435063+46 55 40.578790184N60J000758239.58144338000+46.92796167000 113213037582012.9143  19.84640019.07810018.070500  18.166000      21.04120.25419.92519.57619.41819.3037          16.29616.20612.817 9.310     5.334 0.382122.0 2 5.20415 58 19.9181246524+46 55 44.754717596N60J069671239.58299218605+46.92909853267 11321303696712006.0004                                                21.99521.788       3 6.66215 58 20.0029728000+46 55 45.930720000N60J000761239.58334572000+46.92942520000 113213037612012.0873      19.961700          22.55921.83321.06421.11920.78320.6819                       1.959 0.351 29.5 %0a%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	0.395	15 58 19.54512	+46 55 40.7964	1	3	J155819.54+465540.8			20.980	0.151	19.538	0.016	18.861	0.013	18.517	0.013	18.312	0.041	239.581438	+46.927999	2001.3916	2
2	6.705	15 58 19.99545	+46 55 46.0197	1	3	J155819.99+465546.0			22.187	0.470	21.002	0.055	20.253	0.042	20.047	0.052	19.871	0.176	239.583324	+46.929453	2001.3916	2

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