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	0.379	19 24 08.00736	+54 17 09.5424	1425-09667067	291.033364	+54.285984			18.8	19.0	1953.606
2	6.758	19 24 07.67136	+54 17 03.1200	1425-09666995	291.031964	+54.284200			19.4	18.3	1953.606
3	8.064	19 24 08.55888	+54 17 15.5508	1425-09667185	291.035662	+54.287653			19.3	17.8	1953.606

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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 0.56819 24 07.90536+54 17 09.4020EO0542-0205906291.032939+54.28594519.69  -1 0.73 4.8 0.2019.87  -1 -0.64 6.5 0.18   2 5.05519 24 07.73544+54 17 04.7328EO0774-0176779291.032231+54.28464819.39   2 16.92 14.3 0.6620.37   2 15.13 12.7 0.97* 3 7.01719 24 07.57800+54 17 03.2316EO0542-0206051291.031575+54.28423118.64  -1 0.00 6.3 0.1320.17  -1 1.55 6.5 1.54   4 7.84319 24 08.56152+54 17 15.2412EO0542-0205759291.035673+54.28756718.43   2 9.19 10.7 0.5319.15   2 16.49 15.8 0.72* 5 9.31019 24 08.46936+54 17 17.5704EO0774-0176566291.035289+54.28821418.71   2 34.77 15.8 0.5021.08   2 1.73 6.6 2.37* %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	0.187	19 24 07.99104	+54 17 09.3804	N011320118044	291.033296	+54.285939	1989.562			19.31	0.43	3	2.52	0.10
2	8.007	19 24 08.56824	+54 17 15.4068	N011320118093	291.035701	+54.287613	1991.450	18.16	0.43	19.14	0.43	3	4.12	0.48

%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	0.180	19 24 07.97088	+54 17 09.5316	1442-0288295	291.033212	+54.285981	79	82	1975.5	0	0	5	18.91	19.51	19.04	18.65	18.78
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%3cEM%3e1&%3cFONT%20COLOR=%27#CD5B45%27>%200.180&%3cFONT%20COLOR=%27#CD5B45%27>19%2024%2007.97088&%3cFONT%20COLOR=%27#CD5B45%27>%2b54%2017%2009.5316&1442-0288295&291.033212&%2b54.285981&%2079&%2082&1975.5&%20%20%20%20%200&%20%20%20%20%200&5&18.91&19.51&19.04&18.65&18.78%3cBR%3e">\Ahref='VizieR-5?-ref=VIZ662b156d9ab79&-out.add=.&-source=I/284/out&USNO-B1.0===1442-0288292&-out.orig=o' class='full'2 6.74019 24 07.60608+54 17 03.41161442-0288292291.031692+54.284281 76 711975.3 0 0519.3618.3819.8418.3117.85 3 8.07519 24 08.53536+54 17 15.73081442-0288300291.035564+54.287703153 721975.3 0 0518.9418.5218.9418.2217.91 4 8.79519 24 08.78016+54 17 14.55001442-0288305291.036584+54.2873752991741964.9 -52 28320.4418.8619.98     %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	0.179	19 24 07.970664	+54 17 09.53016	1442-0294128	..	291.0332111	+54.2859806	B	0.0	0.0	0.0	0.0	19.040	B			18.650	B
2	6.742	19 24 07.606008	+54 17 03.41016	1442-0294125	..	291.0316917	+54.2842806	B	0.0	0.0	0.0	0.0	19.840	B			18.310	B
3	8.074	19 24 08.535336	+54 17 15.73008	1442-0294133	..	291.0355639	+54.2877028	B	0.0	0.0	0.0	0.0	18.940	B			18.220	B
4	8.794	19 24 08.779992	+54 17 14.55000	1442-0294138	..	291.0365833	+54.2873750	B	-52.0	7.0	28.0	4.0	19.980	B			18.860	e

%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 0.14919 24 07.98648+54 17 09.3156N15T018044291.033277+54.2859211991.45018.8319.3119.0718.483 2.33 0.06 2 6.93819 24 07.63632+54 17 03.0588N15T017980291.031818+54.2841831991.45018.6219.9618.9817.873 2.34 0.10 3 8.01019 24 08.56824+54 17 15.4104N15T018093291.035701+54.2876141991.45018.1619.1418.7417.683 4.12 0.48 %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	0.081	19 24 07.96080	+54 17 09.3624	291.033170	+54.285934	-2.0	-1.3			18.91	19.04	19.51	18.65	18.78	5	0
2	6.881	19 24 07.60752	+54 17 03.2460	291.031698	+54.284235	2.0	-0.2			19.36	19.84	18.38	18.31	17.85	5	0
3	7.891	19 24 08.53416	+54 17 15.5040	291.035559	+54.287640	3.0	-2.8			18.94	18.94	18.52	18.22	17.91	5	0
4	8.643	19 24 08.78400	+54 17 14.2404	291.036600	+54.287289	-50.5	23.8			20.44	19.98	18.86			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 (...)	[****ClosingBrace(s)Inserted****]
">

%28...%29&%">\BegDIVclass='sort-down ' </A>dece_DEJ2000
arcsecmagBJ
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 0.08119 24 07.96080+54 17 09.3619291.033170+54.285934 0.103 0.10319.310 0.30018.827 0.30018.940 0.40018.490 0.5001975.54001975.5400 -2.0 5.6 -1.3 5.6 2 6.88119 24 07.60752+54 17 03.2460291.031698+54.284235 0.103 0.10319.840 0.40018.310 0.40018.551 0.40017.367 0.5001975.33001975.3300 2.0 5.5 -0.2 5.5 3 6.94519 24 07.63802+54 17 03.0434291.031825+54.284179 0.400 0.40019.955 0.30018.622 0.30018.861 0.40017.806 0.5001991.45001991.4500 2.0 5.3 -1.7 2.4 4 7.89019 24 08.53415+54 17 15.5039291.035559+54.287640 0.103 0.10319.135 0.30018.156 0.30018.364 0.40017.552 0.5001975.33001975.3300 3.0 5.5 -2.8 5.5 5 8.64319 24 08.78403+54 17 14.2401291.036600+54.287289 0.133 0.13319.980 0.40018.860 0.40019.085 0.40018.174 0.5001964.90001964.9000 -50.5 7.6 23.8 7.6 %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	0.059	19 24 07.966404	+54 17 09.40199	722-276778	291.0331933	+54.2859450	2014.141	18.840	0.112
2	6.992	19 24 07.616673	+54 17 03.08121	722-276776	291.0317361	+54.2841892	2013.519	18.409	0.043
3	7.783	19 24 08.511143	+54 17 15.52494	722-276783	291.0354631	+54.2876458	2013.289	18.280	0.029

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

%20

%22>Dup

<FG>
e-/s

e_
e-/s

<Gmag>
mag

Var

1 0.04619 24 07.975224382+54 17 09.35048537291.0332301016 1.003+54.2859306904 2.4272140003807837231488       0.9050 4.0813e+02 4.7917e+0018.998NOT_AVAILABLE 2 7.03519 24 07.612154614+54 17 03.05278603291.0317173109 3.666+54.284181329510.2692140003876556706048       0.9680 6.1865e+02 3.0661e+0018.546NOT_AVAILABLE 3 7.74119 24 08.511986290+54 17 15.46681898291.0354666095 0.358+54.2876296719 0.6052140003807837233664       0.7370 6.1296e+02 2.4121e+0018.556NOT_AVAILABLE 4 9.45719 24 08.949845331+54 17 13.32935990291.0372910222 1.102+54.2870359333 1.8032140003812131395328       0.7690 1.3631e+02 2.0529e+0020.188NOT_AVAILABLE %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"	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	0.032	19 24 07.973102208	+54 17 09.36707568	291.0332212592	+54.2859352988	175300345820440476		1.239	-1.106				18.91	19.04	19.51	18.65	18.78	2140003807837231488	18.998
2	6.994	19 24 07.608394296	+54 17 03.11525340	291.0317016429	+54.2841986815	175300344802160804		2.195	-4.142				19.36	19.84	18.38	18.31	17.85	2140003876556706048	18.546
3	7.790	19 24 08.515245552	+54 17 15.50681232	291.0354801898	+54.2876407812	175300348915854425		-1.902	-2.666				18.94	18.94	18.52	18.22	17.91	2140003807837233664	18.556

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