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	17.615	23 31 46.45944	+74 13 00.1308	1575-05674806	352.943581	+74.216703			19.4	18.8	1952.634
2	18.720	23 31 39.61536	+74 13 08.9328	1575-05673766	352.915064	+74.219148			17.6	16.5	1952.634
3	25.034	23 31 41.70288	+74 12 29.2032	1575-05674110	352.923762	+74.208112			18.4	17.0	1952.634
4	27.423	23 31 37.37952	+74 12 35.8704	1575-05673438	352.905748	+74.209964			17.8	16.9	1952.634

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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	18.685	23 31 39.53712	+74 13 08.6376	N010232342724	352.914738	+74.219066	1992.755	16.31	0.39	18.11	0.42	0	3.70	0.13
2	18.783	23 31 39.51288	+74 13 08.6844	N010232323116	352.914637	+74.219079	1995.587	16.55	0.41			0	3.13	0.02
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%3cEM%3e2&%3cFONT%20COLOR=%27#CD5B45%27>18.783&%3cFONT%20COLOR=%27#CD5B45%27>23%2031%2039.51288&%3cFONT%20COLOR=%27#CD5B45%27>%2b74%2013%2008.6844&N010232323116&352.914637&%2b74.219079&1995.587&16.55&%200.41&%20&%20&0&%20%203.13&%200.02%3cBR%3e">\Ahref='VizieR-5?-ref=VIZ6641674cd49e9&-out.add=.&-source=I/271/out&GSC2.2===N010232342458' class='full'325.56323 31 41.65032+74 12 28.6956N010232342458352.923543+74.2079711992.75517.18 0.3919.04 0.420 3.42 0.19 425.57723 31 41.64432+74 12 28.6848N010232322890352.923518+74.2079681995.58717.23 0.41    0 2.87 0.03 527.72423 31 37.33584+74 12 35.6184N010232322930352.905566+74.2098941995.58717.01 0.41    0 3.07 0.06 627.75623 31 37.36080+74 12 35.4564N010232342510352.905670+74.2098491992.75516.99 0.3918.41 0.420 3.55 0.23 %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	9.212	23 31 42.34344	+74 13 03.2808	1642-0135252	352.926431	+74.217578	224	106	1984.9	0	0	4		19.04	21.12	20.48	18.65
2	16.042	23 31 45.69336	+74 13 02.8704	1642-0135265	352.940389	+74.217464	999	999	1953.6	0	0	2	20.52	19.23
3	17.340	23 31 46.40472	+74 12 59.9400	1642-0135266	352.943353	+74.216650	163	67	1977.9	12	0	5	20.65	19.02	20.38	18.85	18.24
4	18.900	23 31 46.75344	+74 13 00.5916	1642-0135269	352.944806	+74.216831	247	340	1972.7	0	0	2	20.63		20.44
5	19.027	23 31 39.47136	+74 13 08.8608	1642-0135244	352.914464	+74.219128	39	61	1977.9	-8	-4	5	18.27	16.43	17.41	16.24	15.93
6	25.368	23 31 41.59200	+74 12 28.9224	1642-0135249	352.923300	+74.208034	86	46	1977.9	-6	-8	5	19.35	16.96	18.20	17.02	16.56
7	27.610	23 31 37.32000	+74 12 35.8632	1642-0135241	352.905500	+74.209962	53	55	1977.9	0	0	5	18.67	16.87	17.74	16.87	16.69

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Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	NOMAD1	YM	RAJ2000 deg	DEJ2000 deg	[****ClosingBrace(s)Inserted****]
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deg&%">\BegDIVclass='sort-down ' </A>stringr

pmRA
mas/yr

e_
(...)pmDE
mas/yre_
(...)Bmag
magr_

Vmag
magr_

Rmag
magr_

Jmag
magHmag
magKmag
magR

1 9.21223 31 42.343344+74 13 03.280081642-0136770.M352.9264306+74.2175778B 0.0 0.0 0.0 0.021.120B    20.480B16.86115.73915.287   216.04223 31 45.693336+74 13 02.870041642-0136783..352.9403889+74.2174639B 0.0 0.0 0.0 0.020.520o    19.230e         317.34023 31 46.404672+74 12 59.940001642-0136784..352.9433528+74.2166500B 12.0 5.0 0.0 2.020.380B    18.850B         418.89923 31 46.753344+74 13 00.590161642-0136787..352.9448056+74.2168306B 0.0 0.0 0.0 0.020.440B                 519.02623 31 39.471336+74 13 08.860081642-0136761YM352.9144639+74.2191278B -8.0 1.0 -4.0 2.017.550Y16.990Y16.240B15.02914.55814.349   625.37023 31 41.592000+74 12 28.919881642-0136767YM352.9233000+74.2080333B -6.0 2.0 -8.0 1.018.170Y17.540Y17.020B15.56415.04414.619   727.61223 31 37.320000+74 12 35.859961642-0136757YM352.9055000+74.2099611B 0.0 0.0 0.0 0.017.740Y17.230Y16.870B15.80315.45515.247   %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 yr	Fmag mag	jmag mag	Vmag mag	Nmag mag	Class	a pix	e
1	9.032	23 31 42.41208	+74 13 03.1044	N0XN023076	352.926717	+74.217529	1995.587	20.03			18.11	3	1.64	0.23
2	17.405	23 31 46.42008	+74 12 59.9580	N0XN023075	352.943417	+74.216655	1995.587	19.25	21.09		18.40	3	2.18	0.12
3	18.786	23 31 39.51288	+74 13 08.6880	N0XN023116	352.914637	+74.219080	1995.587	16.55	18.11		15.74	0	3.13	0.02
4	25.577	23 31 41.64456	+74 12 28.6848	N0XN022890	352.923519	+74.207968	1995.587	17.23	19.04		16.54	0	2.87	0.03
5	27.723	23 31 37.33608	+74 12 35.6184	N0XN022930	352.905567	+74.209894	1995.587	17.01	18.41		16.58	0	3.07	0.06

%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 [****ClosingBrace(s)Inserted****]
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%27%29%22%20onMouseOut=%22laz%28%29%22>r1mag

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%22>%5cFONT SIZE=-1magr2mag
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mag

No

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1 8.82423 31 42.34320+74 13 02.8920352.926430+74.217470 -1.1 -3.016.86215.287  21.1219.0420.4818.65 5 0 217.27123 31 46.40160+74 12 59.7672352.943340+74.216602 13.9 3.4    20.6520.3819.0218.8518.24 5 0 318.84123 31 39.50568+74 13 08.7348352.914607+74.219093 -6.0 0.315.03014.35018.2717.4116.4316.2415.93 6 0 418.90323 31 46.77696+74 13 00.3324352.944904+74.216759 7.9 -5.1    20.6320.44       2 0 525.50523 31 41.62416+74 12 28.7676352.923434+74.207991 -4.0 -4.815.56514.62019.3518.2016.9617.0216.56 6 0 627.72123 31 37.33992+74 12 35.6040352.905583+74.209890 1.7 0.215.80315.24818.6717.7416.8716.8716.69 6 0 %0a%0a

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 mag	Nmag 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	18.838	23 31 39.51118	+74 13 08.7493	XPM 328-0189438	352.914630	+74.219097	-6.82	0.01	-6.54	0.38	16.546	18.108		15.743	15.030	0.045	14.559	0.063	14.350	0.079	1126090828	17.6	16.5	50	47.823601	0	0	M
2	25.475	23 31 41.63280	+74 12 28.7929	XPM 328-0189450	352.923470	+74.207998	-3.99	-4.55	-3.71	-4.19	17.229	19.035		16.541	15.565	0.058	15.044	0.077	14.620	0.107	1126090858	18.4	17.0	50	47.823601	0	0	M
3	27.747	23 31 37.34402	+74 12 35.5465	XPM 328-0189425	352.905600	+74.209874	-1.01	-2.82	-0.72	-2.45	17.011	18.408		16.581	15.803	0.075	15.456	0.116	15.248	0.179	1126090855	17.8	16.9	50	47.823601	0	0	M

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%3cEM%3e%20%3cFONT%20COLOR=%27#CD5B45%27>Full

%20

%22> _r
arcsec

_RAJ2000
"h:m:s"

_DEJ2000
"d:m:s"

UCAC4

RAJ2000
deg

DEJ2000
deg

ePos
mas

f.mag
mag

of

db

pmRA
mas/yr

pmDE
mas/yr

Jmag
mag

Kmag
mag

Bmag
mag

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mag

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118.38523 31 39.446544+74 13 07.93812822-028431352.9143606+74.2188717 23015.8020 0 -10.3 -12.215.03014.350        000000010 %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	8.824	23 31 42.34320	+74 13 02.8922	352.926430	+74.217470	0.090	0.090	21.120	0.400	20.028	0.300	20.250	0.400	19.358	0.500	1991.0000	1991.0000	-1.1	5.5	-3.0	5.5
2	17.270	23 31 46.40162	+74 12 59.7667	352.943340	+74.216602	0.103	0.103	21.091	0.300	19.250	0.300	19.466	0.400	18.090	0.500	1977.9000	1977.9000	13.9	5.0	3.4	5.0
3	18.385	23 31 39.44653	+74 13 07.9382	352.914361	+74.218872	0.126	0.126	18.108	0.300	16.546	0.300	16.786	0.400	15.581	0.500	1978.1700	1979.0500	-10.3	4.8	-12.2	4.8
4	25.504	23 31 41.62416	+74 12 28.7680	352.923434	+74.207991	0.069	0.069	19.035	0.300	17.229	0.300	17.449	0.400	16.095	0.500	1990.3900	1990.3900	-4.0	3.9	-4.8	3.9
5	27.721	23 31 37.33995	+74 12 35.6040	352.905583	+74.209890	0.082	0.082	18.408	0.300	17.011	0.300	17.253	0.400	16.154	0.500	1985.9900	1985.9900	1.7	4.2	0.2	4.2

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

%20

%22>RAICRS
deg

DEICRS
deg

Epoch
yr

f.mag
mag

e_
mag

pmRA
mas/yr

pmDE
mas/yr

Jmag
mag

Hmag
mag

Kmag
mag

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mag

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mag

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mag

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mag

imag
mag

1 1.03623 31 42.572393+74 12 54.85285822-114613352.9273850+74.21523692013.69917.441                       218.91323 31 39.513324+74 13 08.73524822-114604352.9144175+74.21907692013.29516.442 0.014 -16.3 -4.415.03014.55914.350           325.59023 31 41.634492+74 12 28.77632822-114611352.9233258+74.20797082013.35217.099 0.031 -11.1 -6.115.56515.04414.620           427.72723 31 37.345235+74 12 35.52370822-114596352.9055303+74.20990362013.32517.013 0.026 -5.5 9.715.80315.45615.248           %0a%0a

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_ e-/s	<Gmag> mag	Var
1	9.050	23 31 42.386572957	+74 13 03.12184352	352.9266107207	1.113	+74.2175338454	0.700	2232110206134114816				0.404	0	2.0989e+02	1.6328e+00	19.720	NOT_AVAILABLE
2	17.053	23 31 46.343808248	+74 12 59.78133298	352.9430992010	0.933	+74.2166059258	0.511	2232110206134114688				0.405	0	2.4921e+02	2.0733e+00	19.533	NOT_AVAILABLE
3	18.922	23 31 39.455778878	+74 13 08.67353705	352.9143990787	0.228	+74.2190759825	0.112	2232110274853594240				0.460	0	3.6859e+03	1.6526e+01	16.608	NOT_AVAILABLE
4	25.618	23 31 41.591821664	+74 12 28.66990637	352.9232992569	0.305	+74.2079638629	0.200	2232110206134102272				0.487	0	1.9640e+03	6.7259e+00	17.292	NOT_AVAILABLE
5	27.735	23 31 37.325873721	+74 12 35.64717044	352.9055244738	0.283	+74.2099019918	0.178	2232110206134104448				0.412	1	2.2753e+03	1.0093e+01	17.132	NOT_AVAILABLE

%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