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	3.911	08 20 40.67616	+15 43 46.6932	1050-05685480	125.169484	+15.729637			14.6	13.4	1954.972

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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	3.985	08 20 40.67352	+15 43 46.6032	EO1311-0295756	125.169473	+15.729612	14.32		1	17.15	19.5	0.11	15.57		1	5.47	20.1	1.25
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%3cEM%3e1&%3cFONT%20COLOR=%27#CD5B45%27>%203.985&%3cFONT%20COLOR=%27#CD5B45%27>08%2020%2040.67352&%3cFONT%20COLOR=%27#CD5B45%27>%2b15%2043%2046.6032&EO1311-0295756&125.169473&%2b15.729612&14.32&%20&%201&%20%2017.15&%20%2019.5&%200.11&15.57&%20&%201&%20%20%205.47&%20%2020.1&%20%201.25&%20%3cBR%3e">\Ahref='VizieR-5?-ref=VIZ664133be95d3e&-out.add=.&-source=I/267/out&APM-ID===EO0236-0428985&-out.orig=o' class='full'2 4.82108 20 40.60488+15 43 46.8012EO0236-0428985125.169187+15.72966713.17   1 20.03 18.1 0.1314.64   1 10.71 18.0 1.47   %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	4.255	08 20 40.66008	+15 43 46.3908	N23121317737	125.169417	+15.729553	1989.851	13.73	0.41	15.28	0.42	3	7.19	0.08

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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	4.306	08 20 40.65288	+15 43 46.4808	1057-0175945	125.169387	+15.729578	77	100	1976.9	0	0	5	14.19	12.73	13.68	12.85	12.84
2	4.742	08 20 40.66200	+15 43 45.4620	1057-0175946	125.169425	+15.729295	880	999	1953.0	0	0	2	18.07	13.30
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%3cEM%3e2&%3cFONT%20COLOR=%27#CD5B45%27>%204.742&%3cFONT%20COLOR=%27#CD5B45%27>08%2020%2040.66200&%3cFONT%20COLOR=%27#CD5B45%27>%2b15%2043%2045.4620&1057-0175946&125.169425&%2b15.729295&880&999&1953.0&%20%20%20%20%200&%20%20%20%20%200&2&18.07&13.30&%20&%20&%20%3cBR%3e">\Ahref='VizieR-5?-ref=VIZ664133be95d3e&-out.add=.&-source=I/284/out&USNO-B1.0===1057-0175944&-out.orig=o' class='full'3 7.13608 20 40.44336+15 43 50.28241057-0175944125.168514+15.7306349993351968.3 -126 80315.3518.43    17.16 %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	4.309	08 20 40.652664	+15 43 46.48008	1057-0179152	YM	125.1693861	+15.7295778	B	0.0	0.0	0.0	0.0	17.410	Y	15.630	Y	12.850	B	15.862	15.150	14.606
2	4.743	08 20 40.662000	+15 43 45.45984	1057-0179153	..	125.1694250	+15.7292944	B	0.0	0.0	0.0	0.0	18.070	o			13.300	e
3	7.135	08 20 40.443336	+15 43 50.27988	1057-0179151	..	125.1685139	+15.7306333	B	-126.0	71.0	80.0	8.0	15.350	o			18.430	e

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Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	[****ClosingBrace(s)Inserted****]
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%22d:m:s%22&%">\BegDIVclass='sort-down ' </A>stringGSC2.3

RAJ2000
deg

DEJ2000
degEpoch
yrFmag
magjmag
magVmag
magNmag
magClass

a
pixe

1 4.25508 20 40.66008+15 43 46.3908N90D007737125.169417+15.7295531989.85113.7315.2815.2113.603 7.19 0.08 %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	4.665	08 20 40.63248	+15 43 46.2684	125.169302	+15.729519	-13.3	-7.5	15.862	14.607	14.19	13.68	12.73	12.85	12.84	6	0
2	4.760	08 20 40.62672	+15 43 46.2216	125.169278	+15.729506	-7.1	4.0	15.862	14.607	18.07		13.30			3	0
3	7.047	08 20 40.44768	+15 43 50.1708	125.168532	+15.730603	-108.3	74.0			15.35		18.43		17.16	3	1

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

%20

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

magG
mag

e_
mag

magGrvs
mag

e_
mag

alphaEpoch
yr

deltaEpoch
yr

pmRA
mas/yr

e_
(...)

pmDE
mas/yr

e_
(...)

1 4.28008 20 40.66143+15 43 46.3023125.169423+15.729528 0.006 0.00515.282 0.30013.727 0.30015.973 0.08014.916 0.1102004.95002004.9500 -13.3 4.2 -7.5 4.2 2 9.21208 20 40.38586+15 43 53.4349125.168274+15.731510 0.029 0.03422.451 0.23220.361 0.20419.622 0.14517.913 0.1642004.95002004.9500 0.0 0.0 0.0   %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"	URAT1	RAICRS deg	DEICRS deg	Epoch yr	f.mag mag	e_ mag	pmRA mas/yr	pmDE mas/yr	Jmag mag	Hmag mag	Kmag mag	Bmag mag	Vmag mag	gmag mag	rmag mag	imag mag
1	4.355	08 20 40.627910	+15 43 46.23586	529-153495	125.1693947	+15.7295339	2013.686	16.381	0.053	28.3	6.3	15.862	15.151	14.607			17.113	16.282

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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_ [****ClosingBrace(s)Inserted****]
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mean%3cSUB%3efluxerror%29%27%29%22%20onMouseOut=%22laz%28%29%22>e_

%20

%22>%5cFONT SIZE=-1e-/s<Gmag>
mag

Var

1 4.36808 20 40.657077854+15 43 46.23469038125.1694044911 4.540+15.7295096362 3.212 655836730095642880      -0.5510 2.3601e+02 2.3296e+0019.592NOT_AVAILABLE %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	ipix	comp	pmRA mas/yr	pmDE mas/yr	Jmag mag	Hmag mag	Kmag mag	B1mag mag	B2mag mag	R1mag mag	R2mag mag	Imag mag	GaiaId	Gmag mag	Clone	Nosc
1	4.355	08 20 40.655046120	+15 43 46.31460096	125.1693960255	+15.7295318336	3287135663144089078		1.910	-5.331	15.862	15.151	14.607	14.19	13.68	12.73	12.85	12.84	655836730095642880	19.592	1
2	4.469	08 20 40.650718296	+15 43 46.19182260	125.1693779929	+15.7294977285	3287135663116675957		6.082	2.860	15.862	15.151	14.607	18.07		13.30			655836730095642880	19.592	1

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