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	2.901	16 49 47.90616	+08 07 18.5808	0975-08595058	252.449609	+08.121828			18.1	18.3	1954.342
2	6.985	16 49 47.90088	+08 07 13.1808	0975-08595057	252.449587	+08.120328			15.0	14.7	1954.342
3	9.064	16 49 47.85480	+08 07 10.8012	0975-08595045	252.449395	+08.119667			18.2	16.2	1954.342

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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 [****ClosingBrace(s)Inserted****]
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b-r

%22>%5cFONT SIZE=-1magMflag

1 7.68816 49 47.90688+08 07 12.4608EO1056-0043229252.449612+08.12012816.07   1 31.29 17.9 0.2817.16   2 25.79 26.7 1.09   %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	6.720	16 49 47.88024	+08 07 13.3464	N10313212317	252.449501	+08.120374	1992.430	14.83	0.42	14.69	0.42	3	9.28	0.32

%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	2.436	16 49 47.88672	+08 07 20.0424	0981-0322270	252.449528	+08.122234	430	155	1975.8	0	0	2	20.06				18.25
2	3.667	16 49 47.94888	+08 07 18.1200	0981-0322271	252.449787	+08.121700	594	395	1975.6	0	0	5	18.77	18.65	17.24	17.53	18.32
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%3cEM%3e2&%3cFONT%20COLOR=%27#CD5B45%27>%203.667&%3cFONT%20COLOR=%27#CD5B45%27>16%2049%2047.94888&%3cFONT%20COLOR=%27#CD5B45%27>%2b08%2007%2018.1200&0981-0322271&252.449787&%2b08.121700&594&395&1975.6&%20%20%20%20%200&%20%20%20%20%200&5&18.77&18.65&17.24&17.53&18.32%3cBR%3e">\Ahref='VizieR-5?-ref=VIZ663eaadf101547&-out.add=.&-source=I/284/out&USNO-B1.0===0981-0322272&-out.orig=o' class='full'3 3.72516 49 47.97552+08 07 19.73280981-0322272252.449898+08.1221489999041990.9 0 02    19.33  18.02 4 5.25816 49 47.87880+08 07 14.92320981-0322269252.449495+08.1208121628351982.1 0 0418.47  15.3413.6817.20 5 7.18016 49 47.83680+08 07 12.67320981-0322267252.449320+08.1201871342291977.6 -18 -8515.1415.3214.3614.3916.89 6 8.87516 49 47.83344+08 07 10.93080981-0322266252.449306+08.1197033932931973.6 0 0418.8116.5815.19  14.90 7 8.94516 49 47.69616+08 07 10.72200981-0322265252.448734+08.1196459999991993.5 0 02    13.26  18.29 8 9.06316 49 48.07272+08 07 12.21240981-0322273252.450303+08.1200599999991980.9 0 04  19.4518.1617.8515.45 %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	2.435	16 49 47.886672	+08 07 20.03988	0981-0325854	..	252.4495278	+08.1222333	B	0.0	0.0	0.0	0.0	20.060	o
2	3.664	16 49 47.948664	+08 07 18.12000	0981-0325855	..	252.4497861	+08.1217000	B	0.0	0.0	0.0	0.0	17.240	B			17.530	B
3	3.722	16 49 47.975328	+08 07 19.72992	0981-0325856	..	252.4498972	+08.1221472	B	0.0	0.0	0.0	0.0	19.330	B
4	5.260	16 49 47.878656	+08 07 14.91996	0981-0325853	..	252.4494944	+08.1208111	B	0.0	0.0	0.0	0.0	15.340	B			13.680	B
5	7.182	16 49 47.836656	+08 07 12.66996	0981-0325851	..	252.4493194	+08.1201861	B	-18.0	4.0	-8.0	7.0	14.360	B			14.390	B
6	8.875	16 49 47.833344	+08 07 10.93008	0981-0325850	..	252.4493056	+08.1197028	B	0.0	0.0	0.0	0.0	15.190	B			16.580	e
7	8.948	16 49 47.695992	+08 07 10.71984	0981-0325849	..	252.4487333	+08.1196444	B	0.0	0.0	0.0	0.0	13.260	B
[****ClosingBrace(s)Inserted****]
7	8.948	16 49 47.695992	+08 07 10.71984	0981-0325849	..	252.4487333	+08.1196444	B	0.0	0.0	0.0	0.0	13.260	B

%22>\Ahref='VizieR-5?-ref=VIZ663eaadf101547&-out.add=.&-source=I/297/out&NOMAD1===0981-0325857' class='full'8 9.06416 49 48.072672+08 07 12.209880981-0325857..252.4503028+08.1200583B 0.0 0.0 0.0 0.018.160B    17.850B         %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	6.718	16 49 47.88048	+08 07 13.3500	N3UH002317	252.449502	+08.120375	1992.430	14.83	14.69	16.38	14.91	3	9.28	0.32

%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	1.865	16 49 47.84592	+08 07 20.1468	252.449358	+08.122263	-17.6	-1.7			20.06				18.25	2	0
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%3cEM%3e1&%3cFONT%20COLOR=%27#CD5B45%27>%201.865&%3cFONT%20COLOR=%27#CD5B45%27>16%2049%2047.84592&%3cFONT%20COLOR=%27#CD5B45%27>%2b08%2007%2020.1468&252.449358&%2b08.122263&%20%20%20-17.6&%20%20%20%20-1.7&%20&%20&20.06&%20&%20&%20&18.25&%202&%200%3cBR%3e">\Ahref='VizieR-5?-ref=VIZ663eaadf101547&-out.add=.&-source=I/317/sample&PPMXL===5274265508082072152' class='full'2 3.47916 49 47.93712+08 07 18.1884252.449738+08.121719 11.6 -9.9    18.7717.2418.6517.5318.32 5 0 3 5.27016 49 47.87184+08 07 14.8620252.449466+08.120795 0.6 -32.6    18.4715.34  13.6817.20 4 0 4 6.99116 49 47.88024+08 07 13.0584252.449501+08.120294 -67.7 11.5      18.1619.4517.8515.45 4 1 5 7.20016 49 47.82240+08 07 12.6048252.449260+08.120168 -26.3 -17.0    15.1414.3615.3214.3916.89 5 0 6 8.53916 49 47.80464+08 07 11.2008252.449186+08.119778 -8.0 1.0    18.8115.1916.58  14.90 4 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	3.480	16 49 47.93713	+08 07 18.1880	252.449738	+08.121719	0.103	0.103	17.240	0.400	17.530	0.400	17.428	0.400	17.571	0.500	1975.6200	1975.6200	11.6	5.9	-9.9	5.9
2	5.269	16 49 47.87184	+08 07 14.8620	252.449466	+08.120795	0.115	0.115	14.692	0.300	14.833	0.300	14.775	0.400	14.804	0.500	1982.1800	1982.1800	0.6	7.1	-32.6	7.1
3	6.992	16 49 47.88025	+08 07 13.0579	252.449501	+08.120294	0.133	0.163	18.160	0.400	17.850	0.400	17.920	0.400	17.601	0.500	1978.7700	1978.7700	-67.7	7.6	11.5	8.1
4	7.200	16 49 47.82240	+08 07 12.6051	252.449260	+08.120168	0.103	0.103	14.360	0.400	14.390	0.400	14.365	0.400	14.307	0.500	1977.6300	1977.6300	-26.3	5.4	-17.0	5.4
5	8.539	16 49 47.80466	+08 07 11.2014	252.449186	+08.119778	0.115	0.115	15.190	0.400	16.580	0.400	16.173	0.400	17.166	0.500	1973.6400	1973.6400	-8.0	5.9	1.0	5.9

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

%20

%22>%5cFONT SIZE=-1dege_
mas

DEICRS
deg

e_
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 7.01816 49 47.869406+08 07 12.97591252.4494559 184.00+08.1202711 467.0054137+00023174 -3.3 6.8 -1.2 17.2 643.090 14.833 14.692 14.912 16.375       %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	6.346	16 49 47.8755810668	+08 07 13.662601839	252.44945313587	+08.12046735737	19.527290	-10.140	6.652	2.326	7.250	1.07462e+00		1.988	8.942	-1.488	9.348	3.79582e-01		5	0	PS1	Gaia	DR9+DR12	Sloan	2M

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Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	[****ClosingBrace(s)Inserted****]
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%22d:m:s%22&%">\BegDIVclass='sort-down ' </A>stringGSC2

RA_ICRS
deg

DE_ICRS
deg

objID

Epoch
yr

Class

Gmag
mag

OMag
mag

Bjmag
mag

Fpgmag
mag

Epgmag
mag

Npgmag
mag

Umag
mag

Bmag
mag

Vmag
mag

umag
mag

gmag
mag

rmag
mag

imag
mag

zmag
mag

ymag
mag

Jmag
mag

Hmag
mag

Ksmag
mag

Zmag
mag

Ymag
mag

W1mag
mag

W2mag
mag

W3mag
mag

W4mag
mag

FUVmag
mag

NUVmag
mag

a
pix

e
pix

PA
pix

1 3.75716 49 47.8925040000+08 07 16.845960000N3UH073794252.44955210000+08.12134610000 11031321737942010.5604                                        14.99714.94311.729 8.220           2 6.43416 49 47.8777714568+08 07 13.625787929N3UH002317252.44946521000+08.12044563000 1103132123172013.3343  17.01780014.69280014.833000  14.912900        20.33719.67719.09519.27119.0472                  19.38119.591 9.283 0.316107.9 %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"	WISE	RAJ2000 deg	DEJ2000 deg	eeMaj arcsec	eeMin arcsec	Im	W1mag mag	e_ mag	W2mag mag	e_ mag	W3mag mag	e_ mag	W4mag mag	e_ mag	Jmag mag	Hmag mag	Kmag mag	ccf	ex	var	d2M arcsec	2M
1	3.676	16 49 47.89043	+08 07 16.9263	J164947.89+080716.9	252.449543	+08.121368	0.289	0.203	Im	15.031	0.050	15.032	0.105	11.958	0.277	8.509					0000	0	nnnn		2M
2	9.465	16 49 47.88248	+08 07 10.4864	J164947.88+080710.4	252.449510	+08.119580	0.235	0.161	Im	14.681	0.041	14.595	0.074	11.825	0.243	8.542					0000	0	nnnn		2M

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