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	2.904	13 03 23.70480	+15 33 29.7504	1050-06831800	195.848770	+15.558264			18.9	17.9	1956.201
2	4.063	13 03 24.03216	+15 33 29.3724	1050-06831820	195.850134	+15.558159			19.2	18.5	1956.201

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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	3.334	13 03 23.90952	+15 33 29.0016	EO1572-0158256	195.849623	+15.558056	17.80		2	13.09	20.0	0.53	19.90		1	13.09	15.2	2.10
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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	2.301	13 03 23.76168	+15 33 29.9736	N12333304419	195.849007	+15.558326	1991.135	17.27	0.29	17.53	0.27	3	7.22	0.59

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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	2.259	13 03 23.74872	+15 33 30.1104	1055-0217404	195.848953	+15.558364	49	56	1978.6	28	4	5	19.83	18.70	17.33	17.12	17.83
2	2.799	13 03 23.87352	+15 33 29.3904	1055-0217406	195.849473	+15.558164	999	795	1973.6	0	0	2	20.19			17.16
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%3cEM%3e2&%3cFONT%20COLOR=%27#CD5B45%27>%202.799&%3cFONT%20COLOR=%27#CD5B45%27>13%2003%2023.87352&%3cFONT%20COLOR=%27#CD5B45%27>%2b15%2033%2029.3904&1055-0217406&195.849473&%2b15.558164&999&795&1973.6&%20%20%20%20%200&%20%20%20%20%200&2&20.19&%20&%20&17.16&%20%3cBR%3e">\Ahref='VizieR-5?-ref=VIZ6641917a35f8fc&-out.add=.&-source=I/284/out&USNO-B1.0===1055-0217407&-out.orig=o' class='full'3 3.34013 03 23.98608+15 33 29.72161055-0217407195.849942+15.5582566102641973.4 0 0420.1318.7918.6917.71   4 3.41413 03 23.62536+15 33 30.23281055-0217403195.848439+15.5583989991001984.2 -24 124  18.0917.6518.2217.09 %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	2.259	13 03 23.748672	+15 33 30.11004	1055-0221199	..	195.8489528	+15.5583639	B	28.0	1.0	4.0	2.0	17.330	B			17.120	B
2	2.799	13 03 23.873328	+15 33 29.39004	1055-0221201	..	195.8494722	+15.5581639	B	0.0	0.0	0.0	0.0	20.190	o			17.160	B
3	3.340	13 03 23.986008	+15 33 29.72016	1055-0221202	..	195.8499417	+15.5582556	B	0.0	0.0	0.0	0.0	18.690	B			17.710	B
4	3.416	13 03 23.625336	+15 33 30.22992	1055-0221198	..	195.8484389	+15.5583972	B	-24.0	50.0	12.0	4.0	17.650	B			18.220	B

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

%22>%5cFONT SIZE=-1"h:m:s" _DEJ2000
"d:m:s"GSC2.3

RAJ2000
degDEJ2000
degEpoch
yrFmag
magjmag
magVmag
magNmag
magClass

a
pixe

1 2.29613 03 23.76192+15 33 29.9772N5J0004419195.849008+15.5583271991.13517.2717.5318.1718.003 7.22 0.59 %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	2.191	13 03 23.75304	+15 33 30.1536	195.848971	+15.558376	-41.4	19.9			20.19			17.16		2	0
2	2.472	13 03 23.90472	+15 33 29.9196	195.849603	+15.558311	-28.8	6.8			20.13	18.69	18.79	17.71		4	1
3	2.548	13 03 23.73192	+15 33 29.9160	195.848883	+15.558310	21.2	1.6			19.83	17.33	18.70	17.12	17.83	5	0
4	4.125	13 03 23.57568	+15 33 30.0456	195.848232	+15.558346	-39.7	9.6				17.65	18.09	18.22	17.09	4	1

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Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	RAJ2000 deg	DEJ2000 deg	e_RAJ2000 (...)	e_DEJ2000 [****ClosingBrace(s)Inserted****]
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e_DEJ2000

%20

%22>%5cFONT SIZE=-1arcsecmagBJ
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 2.19113 03 23.75307+15 33 30.1539195.848971+15.558376 0.163 0.16317.526 0.30017.274 0.30017.329 0.40017.054 0.5001973.67001973.6700 -41.4 9.3 19.9 9.3 2 2.47213 03 23.90476+15 33 29.9200195.849603+15.558311 0.115 0.11518.690 0.40017.710 0.40017.918 0.40017.104 0.5001973.46001973.4600 -28.8 6.7 6.8 6.7 3 2.90813 03 23.70598+15 33 29.7324195.848775+15.558259 0.134 0.10517.330 0.40017.120 0.40017.845 0.08317.027 0.1132004.07002004.0700 21.2 5.5 1.6 5.5 4 4.12513 03 23.57563+15 33 30.0461195.848232+15.558346 0.115 0.11517.650 0.40018.220 0.40018.032 0.40018.396 0.5001984.22001984.2200 -39.7 7.0 9.6 7.0 %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"	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	2.325	13 03 23.737392	+15 33 30.12983	195.8489058	215.00	+15.5583694	326.00	56316+0004419	4	-15.5	7.3	4.5	11.1	5	34.932	17.274	17.526	18.002	18.171

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Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	RA_ICRS deg	DE_ICRS deg	rmag mag	pmRA mas/yr	e_ (...)	pmxRA [****ClosingBrace(s)Inserted****]
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pmxRA

%20

%22>%5cFONT SIZE=-1mas/yre_
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Chi2RA

pmGRA
mas/yr

pmDE
mas/yr

e_
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pmxDE
mas/yr

e_
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Chi2DE

pmGDE
mas/yr

Nobs

Flag

PS1

Gaia

DR9+DR12

Sloan

2M

1 2.86613 03 23.7687450938+15 33 29.518612121195.84876729204+15.5582791710220.311852 -93.342 56.701 -110.922 57.911 3.04023e-01   28.640 11.704 28.687 11.710 1.41817e-04   4 0PS1Gaia DR9+DR12Sloan2M %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	2.861	13 03 23.7279294501	+15 33 29.766961563	N5J0004419	195.84880162000	+15.55825707000	112333304419	2012.524	3		19.640600	17.526900	17.274100		18.002200				19.531	20.488	20.301	19.924	19.370	19.3799						15.814	15.653	11.901	8.763	20.835	19.962	7.224	0.585	0.4
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1	2.861	13 03 23.7279294501	+15 33 29.766961563	N5J0004419	195.84880162000	+15.55825707000	112333304419	2012.524	3		19.640600	17.526900	17.274100		18.002200				19.531	20.488	20.301	19.924	19.370	19.3799						15.814	15.653	11.901	8.763	20.835	19.962	7.224	0.585	0.4

%22>\Ahref='VizieR-5?-ref=VIZ6641917a35f8fc&-out.add=.&-source=I/353/gsc242&-c=195.84859806000%20%2b15.55826320000,eq=ICRS,rs=2&-out.orig=o' class='full'2 3.29313 03 23.6635344000+15 33 29.747520000N5J0034480195.84859806000+15.55826320000 11233330344802012.2913                    19.55120.167  19.25319.3756                             3 7.65513 03 24.0862632000+15 33 38.741076000N5J0034537195.85035943000+15.56076141000 11233330345372012.0663                      22.01820.869                                 4 7.69313 03 24.1306776000+15 33 38.377296000N5J0023336195.85054449000+15.56066036000 11233330233362013.2933                  23.71423.11121.60521.36020.556                               %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	2.835	13 03 23.70905	+15 33 29.7703	1	3	J130323.71+153329.7			19.484	0.079	18.313	0.013	17.924	0.018	17.643	0.021	17.488	0.040	195.848803	+15.558265	2004.0751	2
2	7.958	13 03 24.14928	+15 33 38.5092	1	3	J130324.14+153338.5			22.640	0.417	22.817	0.229	21.769	0.132	20.778	0.091	20.189	0.166	195.850622	+15.560697	2004.0751	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