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	11.884	18 19 23.89080	+19 17 59.7732	1050-10204088	274.849545	+19.299937			20.0	19.1	1953.680
2	18.889	18 19 24.81888	+19 18 08.6508	1050-10204714	274.853412	+19.302403			19.0	19.2	1953.680
3	20.995	18 19 25.47288	+19 17 35.7504	1050-10205153	274.856137	+19.293264			19.0	17.9	1953.680
4	22.693	18 19 26.01336	+19 17 47.5728	1050-10205548	274.858389	+19.296548			18.4	17.8	1953.680
5	23.389	18 19 23.37480	+19 18 08.6616	1050-10203701	274.847395	+19.302406			17.7	16.4	1953.680
6	25.374	18 19 26.15616	+19 17 57.1632	1050-10205650	274.858984	+19.299212			17.1	16.0	1953.680

%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 [****ClosingBrace(s)Inserted****]
">

a

%22>%5cFONT SIZE=-1pixe

121.00018 19 25.46976+19 17 35.7000N023101334484274.856124+19.2932501993.61517.92 0.3919.22 0.360 2.72 0.07 222.44118 19 25.99608+19 17 47.6412N023101334593274.858317+19.2965671993.61517.69 0.3818.85 0.360 2.82 0.07 323.40818 19 23.37048+19 18 08.6364N023101334763274.847377+19.3023991993.61516.48 0.3818.02 0.363 3.86 0.18 425.31218 19 26.14728+19 17 57.3900N023101334676274.858947+19.2992751993.61515.96 0.3817.18 0.363 3.45 0.03 %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	1.741	18 19 24.44352	+19 17 48.8832	1092-0306137	274.851848	+19.296912	315	334	1995.2	0	0	3			20.75	18.98	18.64
2	6.804	18 19 24.04680	+19 17 46.4028	1092-0306131	274.850195	+19.296223	127	14	1994.6	0	0	2			21.25	18.87
3	12.080	18 19 23.87736	+19 17 59.8704	1092-0306127	274.849489	+19.299964	114	210	1978.4	0	0	5	21.23	18.99	20.69	18.92	18.79
4	18.748	18 19 24.78816	+19 18 08.6328	1093-0303978	274.853284	+19.302398	104	81	1978.1	0	0	5	19.79	18.77	19.77	18.67	18.58
5	20.649	18 19 25.43880	+19 17 35.7612	1092-0306151	274.855995	+19.293267	96	45	1978.1	0	0	5	19.45	18.02	18.97	18.05	17.76
6	22.231	18 19 25.98216	+19 17 47.7600	1092-0306159	274.858259	+19.296600	51	16	1978.1	-2	-4	5	19.13	17.98	18.69	17.80	17.42
7	23.620	18 19 23.34744	+19 18 08.6400	1093-0303958	274.847281	+19.302400	65	42	1978.1	0	0	5	18.38	16.97	18.12	16.79	16.04
8	25.211	18 19 26.13888	+19 17 57.4404	1092-0306161	274.858912	+19.299289	64	49	1978.1	6	6	5	17.44	16.40	17.42	16.27	15.54
9	29.493	18 19 23.26752	+19 17 26.0808	1092-0306119	274.846948	+19.290578	122	62	1984.8	32	4	4		17.94	19.41	17.76	17.80
10	29.732	18 19 25.43352	+19 18 16.6824	1093-0303991	274.855973	+19.304634	97	146	1984.5	14	-44	4		19.05	21.33	18.99	19.09

%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"	[****ClosingBrace(s)Inserted****]
">

%22h:m:s%22&%">\BegDIVclass='sort-down ' </A>string _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 1.74418 19 24.443328+19 17 48.879961092-0311073..274.8518472+19.2969111B 0.0 0.0 0.0 0.020.750B    18.980B         2 6.80718 19 24.046656+19 17 46.399921092-0311067..274.8501944+19.2962222B 0.0 0.0 0.0 0.021.250B    18.870B         312.08018 19 23.877336+19 17 59.870041092-0311063..274.8494889+19.2999639B 0.0 0.0 0.0 0.020.690B    18.920B         418.74518 19 24.787992+19 18 08.629921093-0308760..274.8532833+19.3023972B 0.0 0.0 0.0 0.019.770B    18.670B         520.64918 19 25.438656+19 17 35.760121092-0311087..274.8559944+19.2932667B 0.0 0.0 0.0 0.018.970B    18.050B         622.22818 19 25.981992+19 17 47.760001092-0311095YM274.8582583+19.2966000B -2.0 1.0 -4.0 0.017.870Y17.710Y17.800B16.71016.23915.548   723.62118 19 23.347344+19 18 08.640001093-0308740YM274.8472806+19.3024000B 0.0 0.0 0.0 0.017.540Y16.740Y16.790B15.37114.86514.794   825.20818 19 26.138664+19 17 57.440041092-0311097YM274.8589111+19.2992889B 6.0 2.0 6.0 1.016.850Y16.040Y16.270B14.94414.51614.326   929.49518 19 23.267328+19 17 26.080081092-0311055.M274.8469472+19.2905778B 32.0 5.0 4.0 2.019.410B    17.760B16.77415.98315.269   1029.72918 19 25.433328+19 18 16.679881093-0308773..274.8559722+19.3046333B 14.0 4.0 -44.0 6.021.330B    18.990B         %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	23.361	18 19 23.36016	+19 18 08.4528	181923.3+191808		274.847334	+19.302348	16.899	3	15.371	14.865	14.795
2	25.060	18 19 26.13312	+19 17 57.1668	181926.1+191757		274.858888	+19.299213	16.328	3	14.944	14.516	14.326

%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	2.210	18 19 24.47808	+19 17 48.5268	N287034594	274.851992	+19.296813	1993.615	19.64	21.53		18.85	3	2.50	0.31
2	6.735	18 19 24.06024	+19 17 46.2768	N287034563	274.850251	+19.296188	1993.615	19.83	22.15			3	1.79	0.20
3	11.629	18 19 24.38808	+19 17 38.9868	N287049468	274.851617	+19.294163	1993.615	20.44				3	1.50	0.40
[****ClosingBrace(s)Inserted****]
">

%3cEM%3e3&%3cFONT%20COLOR=%27#CD5B45%27>11.629&%3cFONT%20COLOR=%27#CD5B45%27>18%2019%2024.38808&%3cFONT%20COLOR=%27#CD5B45%27>%2b19%2017%2038.9868&N287049468&274.851617&%2b19.294163&1993.615&20.44&%20&%20&%20&3&%20%201.50&%200.40%3cBR%3e">\Ahref='VizieR-5?-ref=VIZ66366d681bf44a&-out.add=.&-source=I/305/out&GSC2.3===N287034691&-out.orig=o' class='full'412.00718 19 23.89080+19 17 59.9316N287034691274.849545+19.2999811993.61519.2420.96    3 2.32 0.21 518.68018 19 24.81816+19 18 08.4348N287034762274.853409+19.3023431993.61518.7319.7618.9519.013 2.57 0.14 621.00018 19 25.47000+19 17 35.7036N287034484274.856125+19.2932511993.61517.9219.2218.1718.270 2.72 0.07 722.44418 19 25.99632+19 17 47.6448N287034593274.858318+19.2965681993.61517.6918.8518.1917.873 2.82 0.07 823.41118 19 23.37048+19 18 08.6400N287034763274.847377+19.3024001993.61516.4818.0217.0216.653 3.86 0.18 925.31218 19 26.14728+19 17 57.3900N287034676274.858947+19.2992751993.61515.9617.1816.1916.113 3.45 0.03 %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	11.965	18 19 23.87736	+19 17 59.7192	274.849489	+19.299922	1.1	-8.0			21.23	20.69	18.99	18.92	18.79	5	0
2	18.494	18 19 24.78144	+19 18 08.3952	274.853256	+19.302332	-3.7	-7.1			19.79	19.77	18.77	18.67	18.58	5	0
3	20.779	18 19 25.43856	+19 17 35.5776	274.855994	+19.293216	0.6	-3.6			19.45	18.97	18.02	18.05	17.76	5	0
4	22.243	18 19 25.98024	+19 17 47.4648	274.858251	+19.296518	-5.0	-10.8	16.711	15.549	19.13	18.69	17.98	17.80	17.42	6	0
5	23.378	18 19 23.36160	+19 18 08.4924	274.847340	+19.302359	3.0	-4.4	15.371	14.795	18.38	18.12	16.97	16.79	16.04	6	0
6	25.111	18 19 26.13576	+19 17 57.2244	274.858899	+19.299229	2.0	0.8	14.944	14.326	17.44	17.42	16.40	16.27	15.54	6	0
7	29.369	18 19 23.26584	+19 17 26.2464	274.846941	+19.290624	28.3	9.5	16.775	15.269		19.41	17.94	17.76	17.80	5	0
8	29.590	18 19 25.43304	+19 18 16.5240	274.855971	+19.304590	12.1	-46.5				21.33	19.05	18.99	19.09	4	0

%0a%0a

>	\BegDIVclass='sort-down ' </A>
dec 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	22.147	18 19 25.97254	+19 17 47.3819	XPM 218-0430042	274.858219	+19.296495	-8.21	-4.26	-8.28	-3.78	17.688	18.850	18.193	17.867	16.711	0.145	16.239	0.217	15.549		1038114328	18.4	17.8	451	46.535004	0	0	M
2	23.376	18 19 23.36637	+19 18 08.5464	XPM 218-0429975	274.847360	+19.302374	1.62	-2.77	1.55	-2.28	16.484	18.023	17.024	16.650	15.371	0.045	14.865	0.065	14.795	0.091	1038114350	17.7	16.4	451	46.535004	0	0	M
3	25.085	18 19 26.13361	+19 17 57.2387	XPM 218-0430047	274.858890	+19.299233	-2.61	1.55	-2.67	2.03	15.963	17.176	16.193	16.111	14.944	0.039	14.516	0.052	14.326	0.063	1038114341	17.1	16.0	451	46.535004	0	0	M

%0a%0a%0a%3cP%3e%0a%3cFONT%20SIZE=%27-1%27%3e%3cEM%3e%3cFONT%20COLOR=%27#0000FF%27>%3cB%3eNote:%20%0a%25%25%25%20Introduction%20to%20UCAC4%20VizieR%20page%0a%3cEM%3e%25Note:%20%0a%20%20see%20the%20UCAC4%20document,%20and%20the%0a%20%20the%20fix%20for%20high%20proper%20motion%20stars.%0a%20%20The%20UCAC%20home%20page%20is%20available%20at%0a%20%20http://www.usno.navy.mil/USNO/astrometry/optical-IR-prod/ucac.%0a%20%20%3cBR%3ePlease%20%3cB%3eacknowledge%20the%20usage%0a%20%20of%20the%20UCAC4%0a%0a%25%3cP%3e%0a

Full	_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	Vmag mag	rmag mag	imag mag	H	A	b	h	Z	B	L	N	S
1	25.103	18 19 26.137080	+19 17 57.12612	547-069242	274.8589045	+19.2992017	119	16.010	0	0	-3.1	-0.6	14.944	14.326					0	0	0	0	0	0	0	1	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