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	3.302	16 11 02.51688	+17 24 49.7808	1050-07811624	242.760487	+17.413828			18.4	16.8	1950.293

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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	3.799	16 11 02.44680	+17 24 47.6928	EO0083-0178977	242.760195	+17.413248	16.42		2	21.45	15.4	0.37	18.76		1	16.28	12.9	2.34	*
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%3cEM%3e1&%3cFONT%20COLOR=%27#CD5B45%27>%203.799&%3cFONT%20COLOR=%27#CD5B45%27>16%2011%2002.44680&%3cFONT%20COLOR=%27#CD5B45%27>%2b17%2024%2047.6928&EO0083-0178977&242.760195&%2b17.413248&16.42&%20&%202&%20%2021.45&%20%2015.4&%200.37&18.76&%20&%201&%20%2016.28&%20%2012.9&%20%202.34&%2a%3cBR%3e">\Ahref='VizieR-5?-ref=VIZ6642da632651b8&-out.add=.&-source=I/267/out&APM-ID===EO0083-0179110&-out.orig=o' class='full'2 7.38816 11 02.32200+17 24 43.1532EO0083-0179110242.759675+17.41198720.00L 0      20.56  -1 0.07 5.9 0.56   3 8.23416 11 02.95200+17 24 55.4832EO0083-0178752242.762300+17.41541220.00L 0      21.53   1 2.15 4.6 1.53   %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	3.455	16 11 02.49264	+17 24 49.4676	N10223137266	242.760386	+17.413741	1987.305	17.19	0.42	18.58	0.43	3	5.22	0.38
2	7.552	16 11 02.31744	+17 24 42.9804	N10223137267	242.759656	+17.411939	1994.437	18.34	0.42			0	2.79	0.12

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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	2.609	16 11 02.55480	+17 24 49.3416	1074-0308868	242.760645	+17.413706	960	24	1963.9	0	0	3	20.33	16.90			16.02
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%3cEM%3e1&%3cFONT%20COLOR=%27#CD5B45%27>%202.609&%3cFONT%20COLOR=%27#CD5B45%27>16%2011%2002.55480&%3cFONT%20COLOR=%27#CD5B45%27>%2b17%2024%2049.3416&1074-0308868&242.760645&%2b17.413706&960&%2024&1963.9&%20%20%20%20%200&%20%20%20%20%200&3&20.33&16.90&%20&%20&16.02%3cBR%3e">\Ahref='VizieR-5?-ref=VIZ6642da632651b8&-out.add=.&-source=I/284/out&USNO-B1.0===1074-0308867&-out.orig=o' class='full'2 3.18316 11 02.49600+17 24 48.80161074-0308867242.760400+17.4135561173901980.8 28 -30419.70  18.1116.8915.90 3 4.07216 11 02.46744+17 24 50.10121074-0308866242.760281+17.4139171001801970.8 0 0219.17      17.47 4 6.78016 11 02.34408+17 24 43.72201074-0308865242.759767+17.4121452091121980.3 0 04  18.5520.6418.5317.23 %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	2.610	16 11 02.554656	+17 24 49.34016	1074-0312163	..	242.7606444	+17.4137056	B	0.0	0.0	0.0	0.0	20.330	o			16.900	e
2	3.183	16 11 02.496000	+17 24 48.80016	1074-0312162	..	242.7604000	+17.4135556	B	28.0	4.0	-30.0	14.0	18.110	B			16.890	B
3	4.073	16 11 02.467344	+17 24 50.10012	1074-0312161	.M	242.7602806	+17.4139167	B	0.0	0.0	0.0	0.0	19.170	o					16.411	15.823	15.188
4	6.782	16 11 02.344008	+17 24 43.71984	1074-0312160	.M	242.7597667	+17.4121444	B	0.0	0.0	0.0	0.0	20.640	B			18.530	B	16.251	15.560	15.180

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

%22>%5cFONT SIZE=-1"h:m:s" _DEJ2000
"d:m:s"GSC2.3

RAJ2000
degDEJ2000
degEpoch
yrFmag
magjmag
magVmag
magNmag
magClass

a
pixe

1 3.45416 11 02.49288+17 24 49.4712N3P3007266242.760387+17.4137421987.30517.1918.5818.3916.553 5.22 0.38 2 7.22616 11 02.33880+17 24 43.1280N3P3007267242.759745+17.4119801987.30518.5720.8318.9817.250 2.51 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	3.302	16 11 02.49576	+17 24 49.1796	242.760399	+17.413661	-14.3	-3.7			20.33		16.90		16.02	3	0
2	4.384	16 11 02.42616	+17 24 49.6044	242.760109	+17.413779	-3.5	-9.4	16.412	15.188	19.70	18.11		16.89	15.90	5	1
3	4.933	16 11 02.39904	+17 24 50.0904	242.759996	+17.413914	-27.0	-1.0	16.412	15.188	19.17				17.47	3	0
4	7.340	16 11 02.32344	+17 24 43.2036	242.759681	+17.412001	-11.5	-15.2	16.252	15.181		20.64	18.55	18.53	17.23	5	0

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Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	RAJ2000 deg	DEJ2000 deg	e_RAJ2000 (...)	e_DEJ2000 [****ClosingBrace(s)Inserted****]
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e_DEJ2000

%20

%22>%5cFONT SIZE=-1arcsecmagBJ
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 3.69716 11 02.48457+17 24 49.7744242.760352+17.413826 0.024 0.02018.584 0.30017.186 0.30017.757 0.08216.487 0.1112004.38002004.3800 -14.3 6.9 -3.7 6.9 2 4.38416 11 02.42615+17 24 49.6040242.760109+17.413779 0.115 0.11518.110 0.40016.890 0.40017.123 0.40016.144 0.5001988.63001988.6300 -3.5 5.9 -9.4 5.9 3 7.16316 11 02.32967+17 24 43.3706242.759707+17.412047 0.005 0.00520.831 0.30018.570 0.30018.488 0.08316.884 0.1122004.38002004.3800 -11.5 5.4 -15.2 5.4 %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"	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	3.722	16 11 02.400664	+17 24 50.04195	538-196480	242.7603344	+17.4138086	2013.512	17.712	0.017	84.3	-24.5	16.412	15.824	15.188
2	7.233	16 11 02.324248	+17 24 42.98649	538-196479	242.7596967	+17.4120289	2013.689	18.070	0.034	3.1	23.2	16.252	15.560	15.181

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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_ (...)	[****ClosingBrace(s)Inserted****]
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%28...%29&%">\BegDIVclass='sort-down ' </A>decNobs

Dt
yr

Rmag
mag

Bmag
mag

Nmag
mag

Vmag
mag

Jmag
mag

Hmag
mag

Kmag
mag

1 3.49516 11 02.491665+17 24 49.53087242.7603819 76.00+17.4137586 32.0053943+00072664 1.8 3.4 -3.7 1.4 1144.143 17.186 18.584 16.551 18.388 16.412 15.824 15.188 2 7.21716 11 02.332649+17 24 43.23884242.7597194 58.00+17.4120108 40.0053943+00072670 1.2 2.5 2.3 1.8 1144.143 18.570 20.831 17.247 18.977 16.252 15.560 15.181 %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	<FG> e-/s	e_ e-/s	<Gmag> mag	Var
1	7.239	16 11 02.326966725	+17 24 43.29945390	242.7596956947	0.416	+17.4120276261	0.410	1198925036754377216				0.804	0	7.0342e+02	3.3895e+00	18.407	NOT_AVAILABLE

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