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	5.355	15 08 50.84808	+40 42 43.8228	1275-08596350	227.211867	+40.712173			18.2	18.0	1955.232

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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
1	5.106	15 08 50.82600	+40 42 44.0712	EO1371-0126919	227.211775	+40.712242	17.96		1	14.71	12.8	0.40	18.34		2	40.23	14.9	0.38

%0a%0a%5b%2a%2a%2a%2aClosingBrace%28s%29Inserted%2a%2a%2a%2a%5d">">\scripttype='text/javascript' ts_init('!ext/apm.exe_2');

Note: The construction of the GSC-II is still in progress: this version has no proper motions, and the magnitude limits are 18.5 in F (red) and 19.5 in J (blue). The data are copyrighted, check the data use Policy.

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	5.821	15 08 50.92560	+40 42 43.4484	N13312206735	227.212190	+40.712069	1994.510	16.42	0.25	16.52	0.24	3	8.90	0.35

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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	4.477	15 08 50.74344	+40 42 44.8200	1307-0250941	227.211431	+40.712450	422	650	1973.5	0	0	4	19.51	18.37	17.28	17.68
2	4.640	15 08 50.93880	+40 42 44.6904	1307-0250944	227.212245	+40.712414	999	999	1973.5	0	0	4	19.82	18.29	20.11	18.00
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%3cEM%3e2&%3cFONT%20COLOR=%27#CD5B45%27>%204.640&%3cFONT%20COLOR=%27#CD5B45%27>15%2008%2050.93880&%3cFONT%20COLOR=%27#CD5B45%27>%2b40%2042%2044.6904&1307-0250944&227.212245&%2b40.712414&999&999&1973.5&%20%20%20%20%200&%20%20%20%20%200&4&19.82&18.29&20.11&18.00&%20%3cBR%3e">\Ahref='VizieR-5?-ref=VIZ663bdc3b117804&-out.add=.&-source=I/284/out&USNO-B1.0===1307-0250943&-out.orig=o' class='full'3 5.44415 08 50.86008+40 42 43.74001307-0250943227.211917+40.7121503052081978.3 0 0519.0318.2415.8815.6917.77 4 8.36715 08 51.28272+40 42 42.54121307-0250946227.213678+40.7118179999991980.6 0 0320.16  19.45  18.65 510.90115 08 51.10608+40 42 38.72161307-0250945227.212942+40.7107565987751979.7 0 0320.46  20.4419.29   612.99915 08 50.85888+40 42 36.18001307-0250942227.211912+40.7100504479991991.9 0 02    21.1819.76   726.39815 08 50.36136+40 42 23.33161307-0250940227.209839+40.706481 622751993.7 62 863    21.2420.2219.49 %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	4.477	15 08 50.743344	+40 42 44.82000	1307-0254906	Y.	227.2114306	+40.7124500	B	0.0	0.0	0.0	0.0	17.280	B	17.970	Y	17.680	B
2	4.640	15 08 50.938656	+40 42 44.69004	1307-0254909	..	227.2122444	+40.7124139	B	0.0	0.0	0.0	0.0	20.110	B			18.000	B
3	5.444	15 08 50.860008	+40 42 43.74000	1307-0254908	..	227.2119167	+40.7121500	B	0.0	0.0	0.0	0.0	15.880	B			15.690	B
4	8.367	15 08 51.282672	+40 42 42.54012	1307-0254911	..	227.2136778	+40.7118167	B	0.0	0.0	0.0	0.0	19.450	B
5	10.902	15 08 51.106008	+40 42 38.72016	1307-0254910	..	227.2129417	+40.7107556	B	0.0	0.0	0.0	0.0	20.440	B			19.290	B
6	12.999	15 08 50.858664	+40 42 36.18000	1307-0254907	..	227.2119111	+40.7100500	B	0.0	0.0	0.0	0.0	21.180	B			19.760	B
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6	12.999	15 08 50.858664	+40 42 36.18000	1307-0254907	..	227.2119111	+40.7100500	B	0.0	0.0	0.0	0.0	21.180	B			19.760	B

%22>\Ahref='VizieR-5?-ref=VIZ663bdc3b117804&-out.add=.&-source=I/297/out&NOMAD1===1307-0254905' class='full'726.40015 08 50.361336+40 42 23.330161307-0254905..227.2098389+40.7064806B 62.0 8.0 86.0 39.021.240B    20.220B         %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	5.821	15 08 50.92584	+40 42 43.4484	N67C006735	227.212191	+40.712069	1994.510	16.42	16.52	18.89	18.08	3	8.90	0.35
2	8.344	15 08 51.54120	+40 42 51.4224	N67C006739	227.214755	+40.714284	1994.510	20.44				3	1.58	0.37
3	19.546	15 08 52.30896	+40 42 39.1284	N67C016716	227.217954	+40.710869	1989.409		20.86			3	3.92	0.47
4	19.647	15 08 51.84096	+40 42 33.2064	N67C016707	227.216004	+40.709224	1989.409		22.04			3	2.06	0.63
5	21.286	15 08 52.12440	+40 42 33.7500	N67C016706	227.217185	+40.709375	1989.409		22.01			3	2.00	0.62
6	27.283	15 08 50.33832	+40 42 22.4820	N67C006634	227.209743	+40.706245	1994.510	19.86	20.94			0	1.76	0.07

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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 [****ClosingBrace(s)Inserted****]
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%27%29%22%20onMouseOut=%22laz%28%29%22>b2mag

%22>%5cFONT SIZE=-1magr1mag
magr2mag
magimag
magNo

fl

1 3.26915 08 50.72592+40 42 46.1484227.211358+40.712819 -41.0 37.0    19.8220.1118.2918.00   4 1 2 4.72315 08 50.75544+40 42 44.5392227.211481+40.712372 10.3 -18.2    19.5117.2818.3717.68   4 1 3 5.44415 08 50.87040+40 42 43.7472227.211960+40.712152 10.0 1.7    19.0315.8818.2415.6917.77 5 0 4 7.73315 08 51.16056+40 42 42.3900227.213169+40.711775 -38.6 -29.3    20.1619.45    18.65 3 1 510.34315 08 51.08256+40 42 39.2256227.212844+40.710896 -4.4 17.2    20.4620.44  19.29   3 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

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	3.270	15 08 50.72594	+40 42 46.1479	227.211358	+40.712819	0.133	0.133	20.110	0.400	18.000	0.400	18.162	0.400	16.635	0.500	1968.3300	1968.3300	-41.0	7.2	37.0	7.2
2	5.824	15 08 50.94801	+40 42 43.4974	227.212283	+40.712083	0.164	0.113	16.519	0.300	16.424	0.300	17.444	0.083	16.701	0.113	2002.1000	2002.1000	10.0	5.4	1.7	5.4
3	22.630	15 08 52.73443	+40 42 55.9171	227.219727	+40.715533	0.135	0.185	23.793	0.368	21.676	0.223	20.753	0.327	18.977	0.335	2002.1000	2002.1000	0.0	0.0	0.0
4	26.977	15 08 50.35206	+40 42 22.7620	227.209800	+40.706323	0.032	0.035	20.939	0.300	19.864	0.300	20.449	0.104	19.460	0.128	2002.1000	2002.1000	-33.2	8.3	-15.2	2.1

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

%20

%22>%5cFONT SIZE=-1dege_
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 6.18615 08 50.959940+40 42 43.15713227.2123331 412.00+40.7119881 194.0057192+00067354 30.7 12.8 -20.8 6.0 439.276 16.424 16.519 18.084 18.892       227.56115 08 50.304079+40 42 22.28289227.2096003 142.00+40.7061897 128.0057192+00066340 -44.6 5.3 -19.9 4.8 339.276 19.864 20.939           %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

Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	RA_ICRS deg	DE_ICRS deg	rmag mag	pmRA mas/yr	e_ (...)	pmxRA mas/yr	e_ (...)	Chi2RA	pmGRA mas/yr	pmDE mas/yr	e_ (...)	pmxDE mas/yr	e_ (...)	Chi2DE	pmGDE mas/yr	Nobs	Flag	PS1	Gaia	DR9+DR12	Sloan	2M
1	5.630	15 08 50.9841678528	+40 42 44.513118802	227.21223679702	+40.71213002692	20.686958	-53.821	111.474	-53.821	111.474	3.16142e-01		-84.502	85.846	-84.502	85.846	2.10213e+00		3	0	PS1	Gaia	DR9+DR12	Sloan	2M
2	27.015	15 08 50.3632049631	+40 42 22.680137005	227.20980229496	+40.70631165636	20.634354	-12.115	21.387	49.224	41.082	1.67822e-01		4.183	20.135	27.920	27.115	3.09470e-01		5	0	PS1	Gaia	DR9+DR12	Sloan	2M

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