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	7.984	16 22 49.89072	+36 47 12.3216	1200-07853143	245.707878	+36.786756			12.4	12.2	1954.485

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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	7.737	16 22 49.91280	+36 47 12.4008	EO1093-0079093	245.707970	+36.786778	11.53		2	49.40	26.6	0.21	11.40		1	16.27	31.4	-0.14
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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	7.810	16 22 49.90608	+36 47 12.3792	N13223001005	245.707942	+36.786772	1991.283	11.68	0.43	12.17	0.42	0	12.08	0.11

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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	1.649	16 22 50.36400	+36 47 16.1232	1267-0266337	245.709850	+36.787812	485	268	1974.4	0	0	4	16.65	16.25		14.90	14.66
2	3.781	16 22 50.69016	+36 47 17.4012	1267-0266341	245.711209	+36.788167	999	999	1981.4	160	248	3	18.94		19.71		15.82
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%3cEM%3e2&%3cFONT%20COLOR=%27#CD5B45%27>%203.781&%3cFONT%20COLOR=%27#CD5B45%27>16%2022%2050.69016&%3cFONT%20COLOR=%27#CD5B45%27>%2b36%2047%2017.4012&1267-0266341&245.711209&%2b36.788167&999&999&1981.4&%20%20%20160&%20%20%20248&3&18.94&%20&19.71&%20&15.82%3cBR%3e">\Ahref='VizieR-5?-ref=VIZ663f9274e2d6&-out.add=.&-source=I/284/out&USNO-B1.0===1267-0266334&-out.orig=o' class='full'3 6.25716 22 50.02416+36 47 13.16041267-0266334245.708434+36.7869898762541971.9 0 02  16.2911.23     4 7.33416 22 50.41008+36 47 10.44241267-0266338245.710042+36.7862347785191966.7 0 0318.2318.10  17.06   5 7.39016 22 50.30880+36 47 10.42081267-0266336245.709620+36.7862281922801974.9 0 0217.93      16.73 6 7.76616 22 49.91088+36 47 12.38281267-0266332245.707962+36.786773 611261974.4 6 2412.5012.35  10.8610.79 7 8.77716 22 49.82736+36 47 23.55001267-0266330245.707614+36.7898755089991972.8 0 02  19.19  19.60   8 9.36616 22 50.11608+36 47 26.59201267-0266335245.708817+36.7907207511151980.0 -70 512320.20  19.4418.97   9 9.41216 22 49.59336+36 47 17.86201267-0266329245.706639+36.7882955409651974.3 0 02  17.6714.99     %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	1.653	16 22 50.364000	+36 47 16.11996	1267-0270583	..	245.7098500	+36.7878111	B	0.0	0.0	0.0	0.0	16.650	o			14.900	B
2	3.779	16 22 50.689992	+36 47 17.40012	1267-0270587	..	245.7112083	+36.7881667	B	160.0	119.0	248.0	45.1	19.710	B
3	6.259	16 22 50.023992	+36 47 13.16004	1267-0270580	..	245.7084333	+36.7869889	B	0.0	0.0	0.0	0.0	11.230	B			16.290	e
4	7.336	16 22 50.410008	+36 47 10.43988	1267-0270584	..	245.7100417	+36.7862333	B	0.0	0.0	0.0	0.0	18.230	o			17.060	B
5	7.391	16 22 50.308656	+36 47 10.42008	1267-0270582	..	245.7096194	+36.7862278	B	0.0	0.0	0.0	0.0	17.930	o
6	7.770	16 22 49.910664	+36 47 12.37992	1267-0270578	YM	245.7079611	+36.7867722	B	6.0	1.0	2.0	3.0	16.790	o	16.300	Y	10.860	B	15.984	15.414	15.013
[****ClosingBrace(s)Inserted****]
6	7.770	16 22 49.910664	+36 47 12.37992	1267-0270578	YM	245.7079611	+36.7867722	B	6.0	1.0	2.0	3.0	16.790	o	16.300	Y	10.860	B	15.984	15.414	15.013

%22>\Ahref='VizieR-5?-ref=VIZ663f9274e2d6&-out.add=.&-source=I/297/out&NOMAD1===1267-0270576' class='full'7 8.77716 22 49.827336+36 47 23.550001267-0270576..245.7076139+36.7898750B 0.0 0.0 0.0 0.0        19.600B         8 9.36416 22 50.116008+36 47 26.589841267-0270581..245.7088167+36.7907194B -70.0 27.0 512.0 4.019.440B    18.970B         9 9.41316 22 49.593336+36 47 17.859841267-0270575..245.7066389+36.7882944B 0.0 0.0 0.0 0.014.990B    17.670e         %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	7.903	16 22 49.91496	+36 47 12.1380	162249.9+364712		245.707979	+36.786705	16.774	2

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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	2.468	16 22 50.58192	+36 47 17.9124	N628024249	245.710758	+36.788309	1997.412				16.71	3	3.31	0.07
2	7.805	16 22 49.90632	+36 47 12.3828	N628001005	245.707943	+36.786773	1991.283	11.68	12.17	14.01	12.32	3	12.08	0.11

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