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	4.010	19 56 46.85544	+61 33 05.0724	1500-07123504	299.195231	+61.551409			16.1	14.7	1952.615
2	9.264	19 56 47.21808	+61 33 09.9504	1500-07123572	299.196742	+61.552764			19.0	18.4	1952.615

%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 mag	l_	bClass	bStel	bDiam arcsec	b-r mag	Mflag [****ClosingBrace(s)Inserted****]
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Mflag

%22> 1 4.06019 56 46.86288+61 33 05.0832EO0545-0146079299.195262+61.55141214.79   1 9.25 13.6 0.2016.69   1 14.44 16.1 1.90   %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	3.700	19 56 46.85616	+61 33 04.4532	N011110314001	299.195234	+61.551237	1991.669	14.34	0.32	16.01	0.30	3	5.80	0.25

%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	1.011	19 56 46.39752	+61 33 01.8000	1515-0259805	299.193323	+61.550500	925	999	1991.5	-406	-410	3			15.40	14.35	15.11
2	4.052	19 56 46.84872	+61 33 05.2128	1515-0259811	299.195203	+61.551448	80	153	1975.5	0	0	5	16.50	14.42	15.16	13.71	12.99
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%3cEM%3e2&%3cFONT%20COLOR=%27#CD5B45%27>%204.052&%3cFONT%20COLOR=%27#CD5B45%27>19%2056%2046.84872&%3cFONT%20COLOR=%27#CD5B45%27>%2b61%2033%2005.2128&1515-0259811&299.195203&%2b61.551448&%2080&153&1975.5&%20%20%20%20%200&%20%20%20%20%200&5&16.50&14.42&15.16&13.71&12.99%3cBR%3e">\Ahref='VizieR-5?-ref=VIZ662beba9363cd7&-out.add=.&-source=I/284/out&USNO-B1.0===1515-0259813&-out.orig=o' class='full'3 7.95719 56 47.14344+61 33 08.68321515-0259813299.196431+61.5524122239991991.5 0 03    17.8117.7017.84 4 9.02419 56 47.18736+61 33 09.82081515-0259814299.196614+61.552728 751061975.5 0 0519.7218.8819.5118.6317.71 %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	1.011	19 56 46.397328	+61 33 01.80000	1515-0267003	..	299.1933222	+61.5505000	B	-406.0	108.0	-410.0	174.1	15.400	B			14.350	B
2	4.050	19 56 46.848672	+61 33 05.20992	1515-0267009	YM	299.1952028	+61.5514472	B	0.0	0.0	0.0	0.0	16.710	Y	15.990	Y	13.710	B	14.981	14.166	13.785
3	7.954	19 56 47.143344	+61 33 08.67996	1515-0267011	..	299.1964306	+61.5524111	B	0.0	0.0	0.0	0.0	17.810	B			17.700	B
4	9.024	19 56 47.187336	+61 33 09.82008	1515-0267012	..	299.1966139	+61.5527278	B	0.0	0.0	0.0	0.0	19.510	B			18.630	B

%0a%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 [****ClosingBrace(s)Inserted****]
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%3cEM%3e%20%3cFONT%20COLOR=%27#CD5B45%27>_RAJ2000

%20

%22>%5cFONT SIZE=-1"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 3.70419 56 46.85640+61 33 04.4568N11V014001299.195235+61.5512381991.66914.3416.0115.9414.153 5.80 0.25 2 9.77919 56 47.22312+61 33 10.5804N11V024324299.196763+61.5529391989.565  19.95    3 2.29 0.22 %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	3.529	19 56 46.82328	+61 33 04.5324	299.195097	+61.551259	-4.4	-12.4	14.982	13.785	16.50	15.16	14.42	13.71	12.99	6	0
2	8.769	19 56 47.17824	+61 33 09.5436	299.196576	+61.552651	-5.0	-1.6			19.72	19.51	18.88	18.63	17.71	5	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	[****ClosingBrace(s)Inserted****]
">

mag&%">\BegDIVclass='sort-down ' </A>decmagG
mage_
mag

magGrvs
mag

e_
mag

alphaEpoch
yr

deltaEpoch
yr

pmRA
mas/yr

e_
(...)

pmDE
mas/yr

e_
(...)

1 3.63019 56 46.84439+61 33 04.4643299.195185+61.551240 0.004 0.00416.007 0.30014.337 0.30016.339 0.08015.204 0.1102006.39002006.3900 -4.4 3.9 -12.4 3.9 2 4.80619 56 46.41180+61 33 07.6139299.193383+61.552115 0.008 0.00820.873 0.20219.771 0.20119.447 0.08618.276 0.1152006.39002006.3900 0.0 0.0 0.0   3 9.47619 56 47.18239+61 33 10.4201299.196593+61.552894 0.007 0.00719.951 0.30018.630 0.40019.294 0.08318.431 0.1122006.39002006.3900 -5.0 5.5 -1.6 5.5 %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"	URAT1	RAICRS deg	DEICRS deg	Epoch yr	f.mag mag	e_ mag	pmRA mas/yr	pmDE mas/yr	Jmag mag	Hmag mag	Kmag mag	Bmag mag	Vmag mag	gmag mag	rmag mag	imag mag
1	3.533	19 56 46.818742	+61 33 04.41738	758-250293	299.1951506	+61.5512122	2013.373	16.332	0.016	9.3	-4.0	14.982	14.166	13.785
2	9.334	19 56 47.183590	+61 33 10.23578	758-250297	299.1965983	+61.5528433	2013.388	18.308	0.011

%0a%0a

Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	RA_ICRS deg	e_ mas	DE_ICRS deg	e_ mas	Source	Plx mas	pmRA mas/yr	pmDE mas/yr	RADEcor	Dup [****ClosingBrace(s)Inserted****]
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Dup

%20

%22><FG>
e-/s

e_
e-/s

<Gmag>
mag

Var

1 3.51319 56 46.834607318+61 33 04.34143428299.1951441972 3.729+61.5512059540 4.9962237702562790423552       0.7650 7.5994e+02 8.7028e+0018.323NOT_AVAILABLE 2 4.71519 56 46.406014386+61 33 07.52443603299.1933583933 1.438+61.5520901211 2.1462237702562794713344       0.8760 2.6905e+02 1.6251e+0019.450NOT_AVAILABLE 3 9.39319 56 47.174173442+61 33 10.36059575299.1965590560 1.207+61.5528779433 1.7742237702562790880000       0.8880 3.3219e+02 1.6558e+0019.221NOT_AVAILABLE %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	ipix	comp	pmRA mas/yr	pmDE mas/yr	Jmag mag	Hmag mag	Kmag mag	B1mag mag	B2mag mag	R1mag mag	R2mag mag	Imag mag	GaiaId	Gmag mag	Clone	Nosc
1	3.602	19 56 46.835055912	+61 33 04.52946924	299.1951460663	+61.5512581859	228225470019566680		-0.224	-12.535	14.982	14.166	13.785	16.50	15.16	14.42	13.71	12.99	2237702562790423552	18.323
2	9.241	19 56 47.182669824	+61 33 10.12312476	299.1965944576	+61.5528119791	228225470834524288		-4.047	15.828				19.72	19.51	18.88	18.63	17.71	2237702562790880000	19.221		1

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