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	0.681	19 41 56.19600	+34 24 52.2504	1200-12739134	295.484150	+34.414514			18.0	16.9	1952.541
2	3.104	19 41 56.33280	+34 24 55.3104	1200-12739419	295.484720	+34.415364			18.9	17.8	1952.541
3	5.520	19 41 56.08536	+34 24 47.2500	1200-12738933	295.483689	+34.413125			18.6	17.2	1952.541
4	9.367	19 41 56.52888	+34 24 43.6716	1200-12739796	295.485537	+34.412131			16.8	16.2	1952.541

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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	1.132	19 41 56.23464	+34 24 53.4960	N0301331142080	295.484311	+34.414860	1992.664	16.05	0.44	17.42	0.50	3	6.88	0.42
2	6.196	19 41 56.05416	+34 24 46.6776	N0301331142081	295.483559	+34.412966	1992.664	17.64	0.44	18.73	0.50	0	2.48	0.12
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%3cEM%3e2&%3cFONT%20COLOR=%27#CD5B45%27>%206.196&%3cFONT%20COLOR=%27#CD5B45%27>19%2041%2056.05416&%3cFONT%20COLOR=%27#CD5B45%27>%2b34%2024%2046.6776&N0301331142081&295.483559&%2b34.412966&1992.664&17.64&%200.44&18.73&%200.50&0&%20%202.48&%200.12%3cBR%3e">\Ahref='VizieR-5?-ref=VIZ662a95732970bb&-out.add=.&-source=I/271/out&GSC2.2===N0301331142079' class='full'3 9.62419 41 56.52168+34 24 43.3620N0301331142079295.485507+34.4120451992.66415.67 0.4416.53 0.493 4.16 0.28 %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	0.871	19 41 56.18016	+34 24 52.4916	1244-0345346	295.484084	+34.414581	105	169	1976.3	0	0	5	17.93	16.28	17.14	16.38	16.28
2	2.633	19 41 56.30880	+34 24 54.9108	1244-0345350	295.484620	+34.415253	302	331	1973.3	0	0	4	19.03	17.44		17.12	16.85
3	5.337	19 41 56.10072	+34 24 47.3724	1244-0345344	295.483753	+34.413159	535	213	1965.9	0	0	3	18.53	16.79		16.03
4	6.492	19 41 56.47008	+34 24 58.2732	1244-0345354	295.485292	+34.416187	140	109	1972.6	0	0	2		17.69		17.82
5	9.426	19 41 56.51472	+34 24 43.5420	1244-0345356	295.485478	+34.412095	80	58	1976.3	0	0	5	16.52	15.46	16.44	15.84	15.17

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Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	NOMAD1	YM	RAJ2000 deg	DEJ2000 deg	r	pmRA mas/yr	e_ (...)	pmDE [****ClosingBrace(s)Inserted****]
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pmDE

%22>%5cFONT SIZE=-1mas/yre_
(...)Bmag
magr_

Vmag
magr_

Rmag
magr_

Jmag
magHmag
magKmag
magR

1 0.87319 41 56.179992+34 24 52.490161244-0352689YM295.4840833+34.4145806B 0.0 0.0 0.0 0.017.800Y17.200Y16.380B16.35815.97715.413   2 2.63219 41 56.308656+34 24 54.910081244-0352692..295.4846194+34.4152528B 0.0 0.0 0.0 0.019.030o    17.120B         3 5.34019 41 56.100672+34 24 47.369881244-0352687YM295.4837528+34.4131583B 0.0 0.0 0.0 0.017.320o17.910Y16.030B15.96115.38215.057   4 6.48919 41 56.470008+34 24 58.269961244-0352698.M295.4852917+34.4161861B 0.0 0.0 0.0 0.0        17.820B16.94015.66015.547   5 9.42719 41 56.514672+34 24 43.539841244-0352701YM295.4854778+34.4120944B 0.0 0.0 0.0 0.016.110Y16.130Y15.840B14.90414.78514.689   %0a%0a%3cP%3e%0a%3cFONT%20SIZE=%27-1%27%3e%3cEM%3e%3cFONT%20COLOR=%27#0000FF%27>%3cB%3eNote:%20Zone%20-30/%2b50deg%3cP%3e%0a

Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	CMC14	f_	RAICRS deg	DEICRS deg	r'mag mag	Nt	Jmag mag	Hmag mag	Ksmag mag
1	1.351	19 41 56.15208	+34 24 51.7824	194156.1+342451		295.483967	+34.414384	17.420	1
2	6.205	19 41 56.03256	+34 24 46.7892	194156.0+342446		295.483469	+34.412997	17.550	1	15.962	15.383
3	9.482	19 41 56.49720	+34 24 43.4052	194156.4+342443		295.485405	+34.412057	16.388	2	14.905	14.785	14.690

%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	1.132	19 41 56.23488	+34 24 53.4960	N2GT324301	295.484312	+34.414860	1992.664	16.05	17.42	16.23		3	6.88	0.42
2	6.192	19 41 56.05440	+34 24 46.6812	N2GT324302	295.483560	+34.412967	1992.664	17.64	18.73			0	2.48	0.12
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%3cEM%3e2&%3cFONT%20COLOR=%27#CD5B45%27>%206.192&%3cFONT%20COLOR=%27#CD5B45%27>19%2041%2056.05440&%3cFONT%20COLOR=%27#CD5B45%27>%2b34%2024%2046.6812&N2GT324302&295.483560&%2b34.412967&1992.664&17.64&18.73&%20&%20&0&%20%202.48&%200.12%3cBR%3e">\Ahref='VizieR-5?-ref=VIZ662a95732970bb&-out.add=.&-source=I/305/out&GSC2.3===N2GT324179&-out.orig=o' class='full'3 6.67519 41 55.79520+34 24 55.9692N2GT324179295.482480+34.4155471988.449  19.9718.81  3 1.76 0.06 4 9.62219 41 56.52192+34 24 43.3656N2GT324300295.485508+34.4120461992.66415.6716.5315.86  3 4.16 0.28 %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	1.350	19 41 56.14176	+34 24 52.2144	295.483924	+34.414504	-14.2	-4.8	16.358	15.414	17.93	17.14	16.28	16.38	16.28	6	0
2	2.340	19 41 56.27976	+34 24 54.6912	295.484499	+34.415192	-8.4	-8.0			19.03		17.44	17.12	16.85	4	0
3	5.987	19 41 56.05296	+34 24 46.9116	295.483554	+34.413031	-9.5	-8.1	15.962	15.058	18.53		16.79	16.03		4	0
4	7.203	19 41 56.51064	+34 24 58.8204	295.485461	+34.416339	8.9	13.2	16.940	15.547			17.69	17.82		3	0
5	9.439	19 41 56.50248	+34 24 43.4736	295.485427	+34.412076	-6.2	-0.4	14.905	14.690	16.52	16.44	15.46	15.84	15.17	6	0

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

%20

%22>%5cFONT SIZE=-1mas/yrpmDEp
mas/yr

pmRAx
mas/yr

pmDEx
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Fmag
mag

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Vmag
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Jmag
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e_
mag

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2Mkey

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fg

fs

M

1 1.83519 41 56.10889+34 24 51.8146XPM 248-0543244295.483787+34.414393 -58.60 -74.10 -57.71 -74.1916.05317.41616.226  16.358 0.11515.978 0.19515.414 0.184 24083308418.917.8 28345.78630100M 2 6.09019 41 56.04578+34 24 46.8394XPM 248-0543235295.483524+34.413011 -10.57 -9.05 -9.68 -9.1417.64118.726    15.962 0.08315.383 0.10015.058 0.140 24083307018.617.2 28345.78630100M 3 9.37319 41 56.50223+34 24 43.5418XPM 248-0543273295.485426+34.412095 -7.15 -3.06 -6.26 -3.1515.67016.53015.861  14.905 0.03614.785 0.05614.690 0.094 24083306016.816.2 28345.78630100M %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	1.554	19 41 56.12852	+34 24 51.9858	295.483869	+34.414441	0.006	0.006	17.140	0.400	16.380	0.400	17.706	0.081	16.684	0.111	2006.4000	2006.4000	-14.2	4.5	-4.8	4.5
2	2.340	19 41 56.27975	+34 24 54.6908	295.484499	+34.415192	0.115	0.115	17.416	0.300	16.053	0.300	16.294	0.400	15.218	0.500	1973.3600	1973.3600	-8.4	5.5	-8.0	5.5
3	5.987	19 41 56.05293	+34 24 46.9120	295.483554	+34.413031	0.084	0.084	18.726	0.300	17.641	0.300	17.862	0.400	16.976	0.500	1985.2800	1985.2800	-9.5	4.2	-8.1	4.2
4	7.151	19 41 56.51304	+34 24 58.7467	295.485471	+34.416319	0.011	0.013	20.513	0.202	17.820	0.400	18.621	0.085	17.230	0.113	2006.4000	2006.4000	8.9	6.2	13.2	6.2
5	7.654	19 41 56.83926	+34 24 54.7071	295.486830	+34.415196	0.070	0.070	24.313	0.447	22.098	0.223	20.563	0.409	18.607	0.416	2006.4000	2006.4000	0.0	0.0	0.0
6	9.438	19 41 56.50246	+34 24 43.4740	295.485427	+34.412076	0.069	0.069	16.530	0.300	15.670	0.300	15.860	0.400	15.132	0.500	1988.3700	1988.3700	-6.2	4.0	-0.4	4.0
7	9.750	19 41 56.16119	+34 25 02.0679	295.484005	+34.417241	0.039	0.038	22.345	0.225	21.331	0.209	20.881	0.138	19.667	0.157	2006.4000	2006.4000	0.0	0.0	0.0

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Full	_r [****ClosingBrace(s)Inserted****]
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%22>%5cFONT SIZE=-1arcsec _RAJ2000
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CMC15

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deg

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pflag

Nt

Jmag
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mag

1 1.35019 41 56.15232+34 24 51.7790194156.1+342451295.483968+34.41438317.420   116.358     2 6.20619 41 56.03279+34 24 46.7858194156.0+342446295.483470+34.41299617.550   115.96215.383   3 9.48619 41 56.49742+34 24 43.4015194156.4+342443295.485406+34.41205616.388   214.90514.78514.690 %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	1.341	19 41 56.116194	+34 24 51.94259	623-338815	295.4839381	+34.4144558	2013.268	17.275	0.016	27.0	7.4	16.358	15.978	15.414
2	3.142	19 41 56.326733	+34 24 55.37487	623-338824	295.4846947	+34.4153819	2013.399	17.654	0.012
3	6.219	19 41 56.042858	+34 24 46.83172	623-338808	295.4835097	+34.4129769	2013.349	17.384	0.022	-0.5	-8.6	15.962	15.383	15.058
4	7.132	19 41 56.529096	+34 24 59.10556	623-338836	295.4854513	+34.4163211	2012.853	18.191	0.016	-20.0	-27.2	16.940	15.660	15.547
5	9.447	19 41 56.498267	+34 24 43.52622	623-338835	295.4853892	+34.4120628	2013.340	16.048	0.016	-4.5	-7.5	14.905	14.785	14.690

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