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	3.575	15 11 46.83072	-00 41 32.2620	0825-08625827	227.945128	-00.692295			18.8	17.9	1955.298
2	7.069	15 11 47.43672	-00 41 30.0300	0825-08625903	227.947653	-00.691675			19.4	18.4	1955.298

%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 [****ClosingBrace(s)Inserted****]
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Mflag

%22> 1 3.17215 11 46.86480-00 41 32.1828EO1402-0128503227.945270-00.69227318.65   1 6.25 6.5 0.1020.11   1 8.61 6.8 1.45   2 7.11715 11 47.44488-00 41 30.1308EO1402-0128480227.947687-00.69170318.51   1 3.28 6.9 0.1920.51  -1 2.85 5.9 2.00   %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	3.229	15 11 46.84968	-00 41 32.4672	S22100316465	227.945207	-00.692352	1995.313	17.74	0.42	19.14	0.43	3	3.64	0.16
2	6.644	15 11 47.42568	-00 41 30.5700	S22100316464	227.947607	-00.691825	1995.313	18.49	0.43			0	2.77	0.26

%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	3.551	15 11 46.82736	-00 41 32.4204	0893-0245946	227.945114	-00.692339	134	64	1977.3	0	0	5	19.44	17.83	19.09	17.24	17.56
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%3cEM%3e1&%3cFONT%20COLOR=%27#CD5B45%27>%203.551&%3cFONT%20COLOR=%27#CD5B45%27>15%2011%2046.82736&%3cFONT%20COLOR=%27#CD5B45%27>-00%2041%2032.4204&0893-0245946&227.945114&-00.692339&134&%2064&1977.3&%20%20%20%20%200&%20%20%20%20%200&5&19.44&17.83&19.09&17.24&17.56%3cBR%3e">\Ahref='VizieR-5?-ref=VIZ663b166f3f59af&-out.add=.&-source=I/284/out&USNO-B1.0===0893-0245950&-out.orig=o' class='full'2 6.69915 11 47.42280-00 41 30.39000893-0245950227.947595-00.691775 77 951977.3 0 0520.1918.4420.0618.4917.89 %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	3.552	15 11 46.827336	-00 41 32.42004	0893-0250953	..	227.9451139	-00.6923389	B	0.0	0.0	0.0	0.0	19.090	B			17.240	B
2	6.697	15 11 47.422656	-00 41 30.39000	0893-0250957	YM	227.9475944	-00.6917750	B	0.0	0.0	0.0	0.0	20.060	B	17.970	Y	18.490	B	16.809	16.201	15.845

%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 [****ClosingBrace(s)Inserted****]
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Epoch

%20

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

jmag
mag

Vmag
mag

Nmag
mag

Class

a
pix

e

1 3.92015 11 46.80888-00 41 32.1468S83X006465227.945037-00.6922631993.61118.1119.14  17.773 2.97 0.15 2 6.30915 11 47.38608-00 41 30.2640S83X006464227.947442-00.6917401993.61118.4820.08  17.750 2.37 0.18 %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	3.490	15 11 46.83144	-00 41 32.4348	227.945131	-00.692343	2.4	-3.7			19.44	19.09	17.83	17.24	17.56	5	0
2	6.478	15 11 47.41536	-00 41 30.6348	227.947564	-00.691843	-0.5	-12.2	16.809	15.845	20.19	20.06	18.44	18.49	17.89	6	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 6.23615 11 47.40503-00 41 30.8508XPM 178-0383163227.947521-00.691903 -6.03 -12.79 -6.44 -12.7118.47920.079  17.75016.809 0.15016.201 0.17315.845   31712490119.418.4 62343.91587800M %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	3.457	15 11 46.83558	-00 41 32.3807	227.945148	-00.692328	0.018	0.015	19.090	0.400	17.240	0.400	18.597	0.083	17.531	0.112	1999.2100	1999.2100	2.4	5.7	-3.7	5.7
2	3.890	15 11 46.80971	-00 41 32.1889	227.945040	-00.692275	0.400	0.400	19.137	0.300	18.112	0.300	18.326	0.400	17.481	0.500	1993.6100	1993.6100	2.5	7.2	-5.6	6.1
3	6.235	15 11 47.38249	-00 41 30.3156	227.947427	-00.691754	0.400	0.400	20.079	0.300	18.479	0.300	18.718	0.400	17.489	0.500	1993.6100	1993.6100	-7.8	6.0	-7.1	3.6
4	6.512	15 11 47.41745	-00 41 30.6195	227.947573	-00.691839	0.004	0.004	20.060	0.400	18.490	0.400	18.814	0.082	17.640	0.111	1999.2100	1999.2100	-0.5	5.1	-12.2	5.1

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Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	URAT1	RAICRS deg	DEICRS [****ClosingBrace(s)Inserted****]
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DEICRS

%20

%22>%5cFONT SIZE=-1degEpoch
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 6.45215 11 47.406778-00 41 30.82908447-138122227.9475675-00.69186332013.31918.863 0.433 10.6 9.116.80916.20115.845           %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	3.550	15 11 46.827450	-00 41 32.41998	227.9451144	44.00	-00.6923389	50.00	43277+0006465	4	4.4	2.3	-2.7	2.6	14	42.202	18.112	19.137	17.768
2	6.425	15 11 47.405405	-00 41 30.49008	227.9475225	44.00	-00.6918028	27.00	43277+0006464	4	-5.7	2.2	-3.2	1.4	14	42.202	18.479	20.079	17.750		16.809	16.201	15.845

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