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	11.903	18 48 50.30688	+41 40 05.9412	1275-10384540	282.209612	+41.668317			19.9	18.2	1951.670
2	20.421	18 48 50.90880	+41 39 39.5100	1275-10384731	282.212120	+41.660975			19.2	18.5	1951.670
3	20.793	18 48 52.76472	+41 39 48.3228	1275-10385327	282.219853	+41.663423			18.3	17.7	1951.670
4	24.613	18 48 50.47752	+41 40 22.8612	1275-10384597	282.210323	+41.673017			20.1	18.7	1951.670
5	27.439	18 48 49.90416	+41 39 36.4320	1275-10384398	282.207934	+41.660120			18.1	16.7	1951.670
6	28.478	18 48 53.08488	+41 39 40.4424	1275-10385444	282.221187	+41.661234			18.3	17.1	1951.670

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

bmag

%22>%5cFONT SIZE=-1magl_

bClass

bStel

bDiam
arcsecb-r
magMflag

1 7.44318 48 51.84336+41 40 01.8516EO1445-0245168282.216014+41.66718120.00L 0      21.21   1 3.52 5.8 1.21   212.62918 48 50.24352+41 40 06.1716EO1445-0245089282.209348+41.66838119.61  -1 0.60 4.7 0.1421.50   1 6.05 7.3 1.89   320.49818 48 50.92536+41 39 39.4020EO1445-0245648282.212189+41.66094519.50  -1 -1.49 4.5 0.0720.73  -1 0.51 5.7 1.22   421.13918 48 52.79400+41 39 48.1932EO1445-0245445282.219975+41.66338718.16  -1 -0.48 6.5 0.1319.46  -1 -0.71 6.9 1.30   524.59218 48 50.49888+41 40 22.9224EO1445-0244749282.210412+41.67303419.61  -1 -2.05 4.2 0.0222.08L 0     2.47   627.49418 48 49.92216+41 39 36.2412EO1445-0245747282.208009+41.66006717.11  -1 0.65 8.0 0.1218.80  -1 -0.23 7.5 1.69   %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	21.109	18 48 52.77888	+41 39 47.9880	N030012279335	282.219912	+41.663330	1993.409	17.84	0.41	18.91	0.42	0	2.68	0.10
2	21.296	18 48 52.80840	+41 39 48.1536	N030012236615	282.220035	+41.663376	1989.505			18.82	0.43	0	2.37	0.04
3	27.317	18 48 49.95696	+41 39 36.2124	N030012236576	282.208154	+41.660059	1989.505			17.99	0.43	3	2.89	0.13
4	27.730	18 48 49.93392	+41 39 35.8848	N030012279280	282.208058	+41.659968	1993.409	16.83	0.41	18.30	0.41	0	3.12	0.07
5	28.403	18 48 53.08488	+41 39 40.5540	N030012279306	282.221187	+41.661265	1993.409	17.83	0.41	18.95	0.42	0	2.81	0.15
6	28.476	18 48 53.10216	+41 39 40.6584	N030012236593	282.221259	+41.661294	1989.505			18.72	0.43	3	2.55	0.12

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

mas/yr&%">\BegDIVclass='sort-down ' </A>decNdet

B1mag
mag

R1mag
mag

B2mag
mag

R2mag
mag

Imag
mag

1 0.98318 48 51.17136+41 39 58.76281316-0323430282.213214+41.666323 371251983.0 -46 -12419.90  20.8919.6017.96 210.17018 48 50.41488+41 40 04.58041316-0323421282.210062+41.667939279 401978.1 0 0321.04  20.3419.21   311.54618 48 50.29800+41 40 05.05201316-0323419282.209575+41.6680709489991955.5 0 0220.5319.16       411.97818 48 50.28936+41 40 05.76121316-0323418282.209539+41.668267 812311977.5 0 0520.2618.7420.5518.6718.49 516.67618 48 51.08880+41 39 43.03081316-0323428282.212870+41.6619539999991951.6 0 0220.4219.03       620.46618 48 50.90544+41 39 39.47041316-0323425282.212106+41.660964 451081978.3 0 0520.1518.6920.0619.1818.45 721.00618 48 52.77744+41 39 48.15001316-0323446282.219906+41.663375 381391977.6 4 0519.1917.9618.7417.5517.26 824.60118 48 50.48616+41 40 22.88281316-0323423282.210359+41.673023106 741976.7 0 0521.1619.2121.1819.3218.01 927.67118 48 49.91400+41 39 36.09001316-0323415282.207975+41.660025128 481977.6 0 0518.5116.7618.0816.6714.17 1028.57618 48 53.08680+41 39 40.32001316-0323449282.221195+41.6612001491051977.2 0 0519.2217.7018.5416.9817.45 1129.50518 48 53.13216+41 39 39.50281316-0323451282.221384+41.660973 441901993.9 0 02      16.2216.53 %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	0.986	18 48 51.171336	+41 39 58.75992	1316-0327857	..	282.2132139	+41.6663222	B	-46.0	1.0	-12.0	5.0	20.890	B			19.600	B
2	10.172	18 48 50.414664	+41 40 04.58004	1316-0327848	..	282.2100611	+41.6679389	B	0.0	0.0	0.0	0.0	20.340	B			19.210	B
3	11.545	18 48 50.298000	+41 40 05.04984	1316-0327846	..	282.2095750	+41.6680694	B	0.0	0.0	0.0	0.0	20.530	o			19.160	e
4	11.977	18 48 50.289336	+41 40 05.76012	1316-0327844	..	282.2095389	+41.6682667	B	0.0	0.0	0.0	0.0	20.550	B			18.670	B
5	16.676	18 48 51.088656	+41 39 43.03008	1316-0327855	..	282.2128694	+41.6619528	B	0.0	0.0	0.0	0.0	20.420	o			19.030	e
6	20.466	18 48 50.905344	+41 39 39.47004	1316-0327852	..	282.2121056	+41.6609639	B	0.0	0.0	0.0	0.0	20.060	B			19.180	B
[****ClosingBrace(s)Inserted****]
6	20.466	18 48 50.905344	+41 39 39.47004	1316-0327852	..	282.2121056	+41.6609639	B	0.0	0.0	0.0	0.0	20.060	B			19.180	B

%22>\Ahref='VizieR-5?-ref=VIZ663764bb3e5276&-out.add=.&-source=I/297/out&NOMAD1===1316-0327873' class='full'721.00618 48 52.777344+41 39 48.150001316-0327873..282.2199056+41.6633750B 4.0 1.0 0.0 4.018.740B    17.550B         824.59918 48 50.485992+41 40 22.879921316-0327850..282.2103583+41.6730222B 0.0 0.0 0.0 0.021.180B    19.320B         927.67118 48 49.914000+41 39 36.090001316-0327842YM282.2079750+41.6600250B 0.0 0.0 0.0 0.018.350Y    16.670B15.79815.07614.935   1028.57518 48 53.086656+41 39 40.320001316-0327876..282.2211944+41.6612000B 0.0 0.0 0.0 0.018.540B    16.980B         1129.50518 48 53.131992+41 39 39.499921316-0327878..282.2213833+41.6609722B 0.0 0.0 0.0 0.0        16.220B         %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	27.791	18 48 49.94928	+41 39 35.7120	184849.9+413935		282.208122	+41.659920	17.079	2	15.798	15.076

%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	1.089	18 48 51.19200	+41 39 58.5792	N2E2036664	282.213300	+41.666272	1993.409	19.34	20.45		18.13	3	2.15	0.11
2	12.115	18 48 50.27328	+41 40 05.7252	N2E2036689	282.209472	+41.668257	1993.409	18.64	19.89	19.36	18.67	3	3.53	0.41
3	20.532	18 48 50.90448	+41 39 39.4056	N2E2036585	282.212102	+41.660946	1993.409	18.85	19.73	19.32	18.89	3	2.46	0.17
4	21.111	18 48 52.77912	+41 39 47.9880	N2E2036615	282.219913	+41.663330	1993.409	17.84	18.91	18.24	17.54	0	2.68	0.10
[****ClosingBrace(s)Inserted****]
">

%3cEM%3e4&%3cFONT%20COLOR=%27#CD5B45%27>21.111&%3cFONT%20COLOR=%27#CD5B45%27>18%2048%2052.77912&%3cFONT%20COLOR=%27#CD5B45%27>%2b41%2039%2047.9880&N2E2036615&282.219913&%2b41.663330&1993.409&17.84&18.91&18.24&17.54&0&%20%202.68&%200.10%3cBR%3e">\Ahref='VizieR-5?-ref=VIZ663764bb3e5276&-out.add=.&-source=I/305/out&GSC2.3===N2E2102374&-out.orig=o' class='full'521.87218 48 52.22976+41 39 41.0112N2E2102374282.217624+41.6613921993.40920.25      3 1.87 0.53 624.24618 48 50.49504+41 40 22.5408N2E2036761282.210396+41.6729281993.40919.0220.25  18.273 2.19 0.10 727.72718 48 49.93392+41 39 35.8884N2E2036576282.208058+41.6599691993.40916.8318.3017.3316.343 3.12 0.07 828.40518 48 53.08512+41 39 40.5540N2E2036593282.221188+41.6612651993.40917.8318.95  17.343 2.81 0.15 %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	1.137	18 48 51.17088	+41 39 58.5972	282.213212	+41.666277	-48.2	-14.8			19.90	20.89		19.60	17.96	4	0
2	10.312	18 48 50.39304	+41 40 04.4256	282.209971	+41.667896	-7.5	-2.4			21.04	20.34		19.21		3	0
3	12.061	18 48 50.28144	+41 40 05.7756	282.209506	+41.668271	-2.9	-0.8			20.26	20.55	18.74	18.67	18.49	5	0
4	20.536	18 48 50.90232	+41 39 39.4056	282.212093	+41.660946	-2.1	-0.4			20.15	20.06	18.69	19.18	18.45	5	0
5	21.118	18 48 52.77576	+41 39 47.9196	282.219899	+41.663311	2.5	-6.1			19.19	18.74	17.96	17.55	17.26	5	0
6	24.467	18 48 50.48952	+41 40 22.7532	282.210373	+41.672987	2.9	-1.9			21.16	21.18	19.21	19.32	18.01	5	0
7	27.838	18 48 49.92384	+41 39 35.8272	282.208016	+41.659952	4.8	-5.3	15.798	14.935	18.51	18.08	16.76	16.67	14.17	6	0
8	28.634	18 48 53.08224	+41 39 40.1796	282.221176	+41.661161	0.8	-4.1			19.22	18.54	17.70	16.98	17.45	5	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	27.819	18 48 49.92817	+41 39 35.8201	XPM 263-0461592	282.208034	+41.659950	2.09	-8.01	2.58	-7.42	16.832	18.298	17.326	16.343	15.798	0.072	15.076	0.088	14.935	0.109	1074608161	18.1	16.7	231	48.614071	0	0	M

%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	1.256	18 48 51.21901	+41 39 58.4013	282.213413	+41.666223	0.016	0.017	20.447	0.300	19.341	0.300	19.521	0.102	17.792	0.127	2005.4400	2005.4400	-48.2	6.3	-14.8	6.3
2	8.942	18 48 50.49179	+41 40 03.5773	282.210382	+41.667660	0.028	0.028	20.340	0.400	19.210	0.400	20.868	0.113	20.142	0.136	2005.4400	2005.4400	-7.5	7.1	-2.4	7.1
3	12.332	18 48 50.25278	+41 40 05.7621	282.209387	+41.668267	0.011	0.011	19.885	0.300	18.636	0.300	19.645	0.089	18.299	0.117	2005.4400	2005.4400	-2.9	5.2	-0.8	5.2
4	20.643	18 48 50.90000	+41 39 39.3014	282.212083	+41.660917	0.009	0.009	19.732	0.300	18.847	0.300	19.136	0.083	18.257	0.112	2005.4400	2005.4400	-2.1	5.5	-0.4	5.5
5	21.169	18 48 52.77884	+41 39 47.8793	282.219912	+41.663300	0.004	0.004	18.905	0.300	17.838	0.300	18.028	0.081	17.178	0.111	2005.4400	2005.4400	2.5	5.7	-6.1	5.7
6	22.244	18 48 52.22895	+41 39 40.5708	282.217621	+41.661270	0.039	0.038	23.627	0.271	20.254	0.300	20.729	0.203	18.985	0.217	2005.4400	2005.4400	0.0	0.0	0.0	0.0
7	24.182	18 48 50.50238	+41 40 22.5021	282.210427	+41.672917	0.017	0.017	20.248	0.300	19.024	0.300	19.258	0.400	18.275	0.500	2005.4400	2005.4400	2.9	5.0	-1.9	5.0
8	27.791	18 48 49.92800	+41 39 35.8540	282.208033	+41.659959	0.084	0.087	18.298	0.300	16.832	0.300	17.192	0.080	16.178	0.110	2005.4400	2005.4400	4.8	4.2	-5.3	4.2
9	28.353	18 48 53.07117	+41 39 40.4592	282.221130	+41.661239	0.004	0.004	18.950	0.300	17.828	0.300	18.035	0.081	17.183	0.111	2005.4400	2005.4400	0.8	5.8	-4.1	5.8
[****ClosingBrace(s)Inserted****]
9	28.353	18 48 53.07117	+41 39 40.4592	282.221130	+41.661239	0.004	0.004	18.950	0.300	17.828	0.300	18.035	0.081	17.183	0.111	2005.4400	2005.4400	0.8	5.8	-4.1	5.8

%22>\EndTABLESORT

Note: Zone -40/+50deg