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	0.880	15 48 15.77016	-09 52 47.7228	0750-09196940	237.065709	-09.879923			17.3	15.7	1954.402
2	9.048	15 48 15.38472	-09 52 54.5628	0750-09196872	237.064103	-09.881823			16.2	15.7	1954.402

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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	1.547	15 48 15.72240	-09 52 47.6472	S22132303683	237.065510	-09.879902	1990.329	15.64	0.28	16.10	0.29	3	5.04	0.37

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

_DEJ2000
"d:m:s"USNO-B1.0

RAJ2000
degDEJ2000
dege_RAJ2000
mase_DEJ2000
masEpoch
yrpmRA
mas/yrpmDE
mas/yrNdet

B1mag
magR1mag
magB2mag
magR2mag
magImag
mag 1 1.12015 48 15.74808-09 52 47.85240801-0295304237.065617-09.8799591741371975.5 0 0517.8916.1115.4515.2915.53 2 9.17515 48 15.38400-09 52 54.73200801-0295302237.064100-09.881870 571811975.5 4 0516.7016.0516.5715.6215.51 %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%2f239%29,%20Tycho-2%20%28I%2f259%29,%20UCAC2%20%28I%2f289%29,%20and%20USNO-B1.0%0a%28I%2f284%29%20catalogs%20for%20astrometry%20and%20optical%20photometry,%20supplemented%0aby%202MASS%20%28II%2f246%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%2fLinux%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	1.122	15 48 15.748008	-09 52 47.84988	0801-0300663	YM	237.0656167	-09.8799583	B	0.0	0.0	0.0	0.0	17.460	Y	16.910	Y	15.290	B	15.369	14.625	14.089
2	9.174	15 48 15.384000	-09 52 54.72984	0801-0300661	YM	237.0641000	-09.8818694	B	4.0	1.0	0.0	6.0	16.760	Y	16.210	Y	15.620	B	14.798	14.358	14.282

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Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	GSC2.3	RAJ2000 deg	DEJ2000 deg	[****ClosingBrace(s)Inserted****]
">

deg&%">\BegDIVclass='sort-down ' </A>decEpoch
yrFmag
mag

jmag
mag

Vmag
mag

Nmag
mag

Class

a
pix

e

1 1.54915 48 15.72240-09 52 47.6400S8A4003683237.065510-09.8799001990.32915.6416.10  15.943 5.04 0.37 %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	1.125	15 48 15.74712	-09 52 47.8812	237.065613	-09.879967	-2.0	-6.7	15.370	14.089	17.89	15.45	16.11		15.53	5	0
2	9.912	15 48 15.35784	-09 52 55.3836	237.063991	-09.882051	-10.1	-22.6	14.798	14.283	16.70	16.57	16.05		15.51	5	0

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Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	ID	RAICRS deg	DEICRS deg	pmRAp mas/yr	pmDEp mas/yr	pmRAx mas/yr	pmDEx mas/yr	Fmag mag	Bjmag mag	Vmag [****ClosingBrace(s)Inserted****]
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Vmag

%20

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

Jmag
mag

e_
mag

Hmag
mag

e_
mag

Kmag
mag

e_
mag

2Mkey

Bmag
mag

Rmag
mag

Fld

dT
yr

fg

fs

M

1 1.11215 48 15.74810-09 52 47.8777XPM 160-0400519237.065617-09.879966 1.04 2.17 0.68 2.1315.63916.099  15.93715.370 0.09414.625 0.09214.089 0.100 32501468517.315.7 74544.82000300M %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	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	1.125	15 48 15.74713	-09 52 47.8807	237.065613	-09.879967	0.067	0.067	16.099	0.300	15.639	0.300	15.747	0.400	15.313	0.500	1990.0500	1990.0500	-2.0	4.0	-6.7	4.0

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

%20

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

Kmag
mag

Bmag
mag

Vmag
mag

gmag
mag

rmag
mag

imag
mag

1 0.95915 48 15.749420-09 52 47.88736401-097321237.0656697-09.87994862013.91216.661 0.023 12.0 5.215.37014.62514.089           %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	1.324	15 48 15.737743	-09 52 47.68112	237.0655739	99.00	-09.8799114	101.00	43500+0003683	4	0.7	3.3	4.6	3.3	5	41.903	15.639	16.099	15.937		15.370	14.625	14.089
2	9.932	15 48 15.349388	-09 52 55.29109	237.0639558	71.00	-09.8820253	120.00	43500+0003682	0	5.8	2.3	-0.6	4.0	5	41.903	15.986	17.157	15.557		14.798	14.358	14.283

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