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	1.523	21 19 36.97416	+03 32 12.1632	0900-19533164	319.904059	+03.536712			19.5	18.5	1952.631
2	14.508	21 19 37.16616	+03 31 59.4408	0900-19533201	319.904859	+03.533178			18.7	18.1	1952.631
3	15.922	21 19 36.23616	+03 32 25.6308	0900-19533007	319.900984	+03.540453			19.3	18.8	1952.631
4	16.721	21 19 36.23880	+03 32 26.6928	0900-19533009	319.900995	+03.540748			19.4	18.4	1952.645

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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 [****ClosingBrace(s)Inserted****]
">

bStel

%22>bDiam
arcsecb-r
magMflag

1 1.57721 19 36.98952+03 32 12.2532EO0552-0423687319.904123+03.53673719.36  -1 2.48 4.5 0.1320.61  -1 -0.49 5.0 1.25   2 2.12521 19 37.03536+03 32 12.1704EO0575-0013521319.904314+03.53671419.29  -1 -1.47 4.3 0.1220.71  -1 -1.81 4.9 1.42   314.25621 19 37.18608+03 31 59.7828EO0552-0423927319.904942+03.53327318.35  -1 1.41 5.9 0.2019.14  -1 0.89 7.2 0.80   414.57621 19 37.17936+03 31 59.4228EO0575-0013814319.904914+03.53317318.23  -1 -0.08 6.3 0.1519.51  -1 -1.57 6.9 1.28   516.27421 19 36.23544+03 32 26.0808EO0575-0013232319.900981+03.54057818.81   1 3.71 6.0 0.2121.41  -1 -0.09 4.1 2.61   616.35521 19 36.22872+03 32 26.1024EO0552-0423422319.900953+03.54058419.26  -1 -0.77 4.0 0.0320.92  -1 1.48 4.6 1.65   727.45721 19 35.34336+03 32 27.4128EO0552-0423395319.897264+03.54094820.00L 0      21.79  -1 0.92 3.2 1.79   827.73421 19 37.80888+03 32 37.8528EO0575-0012960319.907537+03.54384816.82   1 7.83 16.0 0.7521.83L 0     5.01   %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	14.542	21 19 37.16136	+03 31 59.3868	N00203112358	319.904839	+03.533163	1995.582	18.17	0.42	18.96	0.43	0	2.65	0.07

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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	1.558	21 19 36.96072	+03 32 12.0300	0935-0604896	319.904003	+03.536675	154	36	1976.8	0	0	5	20.15	18.85	20.04	18.87	16.87
2	14.464	21 19 37.15416	+03 31 59.4408	0935-0604898	319.904809	+03.533178	73	73	1976.8	0	0	5	19.02	18.18	18.64	18.09	17.68
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">

%3cEM%3e2&%3cFONT%20COLOR=%27#CD5B45%27>14.464&%3cFONT%20COLOR=%27#CD5B45%27>21%2019%2037.15416&%3cFONT%20COLOR=%27#CD5B45%27>%2b03%2031%2059.4408&0935-0604898&319.904809&%2b03.533178&%2073&%2073&1976.8&%20%20%20%20%200&%20%20%20%20%200&5&19.02&18.18&18.64&18.09&17.68%3cBR%3e">\Ahref='VizieR-5?-ref=VIZ66402db8366d92&-out.add=.&-source=I/284/out&USNO-B1.0===0935-0604888&-out.orig=o' class='full'316.15321 19 36.20352+03 32 25.51200935-0604888319.900848+03.5404201761081976.8 0 0520.0019.1619.7819.0618.57 429.42421 19 37.72272+03 32 40.37280935-0604901319.907178+03.544548326 851992.9 0 03    21.1219.4218.18 %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	1.558	21 19 36.960672	+03 32 12.03000	0935-0656643	..	319.9040028	+03.5366750	B	0.0	0.0	0.0	0.0	20.040	B			18.870	B
2	14.464	21 19 37.153992	+03 31 59.44008	0935-0656645	..	319.9048083	+03.5331778	B	0.0	0.0	0.0	0.0	18.640	B			18.090	B
3	16.154	21 19 36.203328	+03 32 25.50984	0935-0656635	Y.	319.9008472	+03.5404194	B	0.0	0.0	0.0	0.0	18.350	Y			19.060	B
4	29.421	21 19 37.722672	+03 32 40.36992	0935-0656648	..	319.9071778	+03.5445472	B	0.0	0.0	0.0	0.0	21.120	B			19.420	B

%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****]
">

%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 1.69621 19 36.97032+03 32 11.9400N0FP002384319.904043+03.5366501995.58218.7620.3919.0418.133 2.56 0.16 214.53921 19 37.16160+03 31 59.3904N0FP002358319.904840+03.5331641995.58218.1718.9617.7617.523 2.65 0.07 316.14521 19 36.21192+03 32 25.6128N0FP002414319.900883+03.5404481995.58219.1020.2319.0218.163 2.36 0.16 428.32021 19 35.22960+03 32 26.0772N0FP023710319.896790+03.5405771987.645  22.47    3 1.52 0.22 529.47421 19 37.73568+03 32 40.3404N0FP002448319.907232+03.5445391995.58219.5821.61  18.063 2.31 0.12 %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	1.625	21 19 36.95472	+03 32 11.9292	319.903978	+03.536647	-5.0	-2.5			20.15	20.04	18.85	18.87	16.87	5	0
2	14.528	21 19 37.16040	+03 31 59.3976	319.904835	+03.533166	0.7	-1.1			19.02	18.64	18.18	18.09	17.68	5	0
3	16.172	21 19 36.19344	+03 32 25.4004	319.900806	+03.540389	-7.0	-5.5			20.00	19.78	19.16	19.06	18.57	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_ [****ClosingBrace(s)Inserted****]
">

e_

%20

%22>%5cFONT SIZE=-1magmagRF
mag

e_
mag

magG
mag

e_
mag

magGrvs
mag

e_
mag

alphaEpoch
yr

deltaEpoch
yr

pmRA
mas/yr

e_
(...)

pmDE
mas/yr

e_
(...)

1 1.74821 19 36.96247+03 32 11.8372319.904010+03.536621 0.008 0.00820.389 0.30018.763 0.30019.260 0.08318.133 0.1122008.82002008.8200 -5.0 5.2 -2.5 5.2 214.66221 19 37.15313+03 31 59.2326319.904805+03.533120 0.004 0.00418.963 0.30018.171 0.30018.318 0.08117.533 0.1112008.82002008.8200 0.7 5.2 -1.1 5.2 316.36221 19 36.19949+03 32 25.7384319.900831+03.540483 0.008 0.00720.225 0.30019.100 0.30019.235 0.08318.180 0.1122008.82002008.8200 -7.0 5.2 -5.5 5.2 429.21421 19 37.75944+03 32 39.8888319.907331+03.544414 0.012 0.01221.614 0.30019.577 0.30019.514 0.09217.845 0.1192008.82002008.8200 -39.5 30.0 10.0 20.4 %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"	RAICRS deg	e_ 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	1.925	21 19 36.974144	+03 32 11.71492	319.9040589	194.00	+03.5365875	99.00	49717+0002384	0	-4.4	5.7	-5.6	2.9	8	42.993	18.763	20.389	18.128	19.042
2	14.594	21 19 37.150869	+03 31 59.29500	319.9047953	63.00	+03.5331375	153.00	49717+0002358	0	-2.6	2.0	2.8	4.8	10	42.993	18.171	18.963	17.522	17.759
3	16.039	21 19 36.209249	+03 32 25.43495	319.9008719	144.00	+03.5403986	183.00	49717+0002414	0	-1.3	4.2	-5.7	5.3	8	42.993	19.100	20.225	18.163	19.022

%0a%0a

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

mas&%">\BegDIVclass='sort-down ' </A>decSource

Plx
mas

pmRA
mas/yr

pmDE
mas/yr

RADEcor

Dup

<FG>
e-/s

e_
e-/s

<Gmag>
mag

Var

1 1.85421 19 36.960212805+03 32 11.71456397319.9040008867 4.581+03.5365873789 7.5682692906011685989504       0.8200 3.5454e+02 2.5639e+0119.151NOT_AVAILABLE 214.73521 19 37.157493685+03 31 59.17351575319.9048228904 3.542+03.5331037544 1.4812692906011685987456       0.9820 7.8500e+02 3.4052e+0018.288NOT_AVAILABLE 316.29821 19 36.196662758+03 32 25.61405471319.9008194282 4.603+03.5404483485 7.6342692906011685992320       0.8250 3.4933e+02 3.1640e+0019.167NOT_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	1.774	21 19 36.961972272	+03 32 11.80749300	319.9040082178	+03.5366131925	1736562578520839280		-1.760	-6.182				20.15	20.04	18.85	18.87	16.87	2692906011685989504	19.151
2	14.658	21 19 37.157902824	+03 31 59.25450864	319.9048245951	+03.5331262524	1736562576180170967		-0.407	-5.399				19.02	18.64	18.18	18.09	17.68	2692906011685987456	18.288
3	16.252	21 19 36.200547312	+03 32 25.60451568	319.9008356138	+03.5404456988	1736562591131306699		-3.881	0.613				20.00	19.78	19.16	19.06	18.57	2692906011685992320	19.167

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