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	4.808	17 47 34.74144	+68 40 49.4220	1575-03857937	266.894756	+68.680395			15.3	14.4	1952.631

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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	4.402	17 47 34.64208	+68 40 49.0728	EO0745-0011523	266.894342	+68.680298	14.13		1	27.51	17.5	0.15	15.97		1	8.52	19.0	1.84
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%3cEM%3e1&%3cFONT%20COLOR=%27#CD5B45%27>%204.402&%3cFONT%20COLOR=%27#CD5B45%27>17%2047%2034.64208&%3cFONT%20COLOR=%27#CD5B45%27>%2b68%2040%2049.0728&EO0745-0011523&266.894342&%2b68.680298&14.13&%20&%201&%20%2027.51&%20%2017.5&%200.15&15.97&%20&%201&%20%20%208.52&%20%2019.0&%20%201.84&%20%3cBR%3e">\Ahref='VizieR-5?-ref=VIZ662331882d0320&-out.add=.&-source=I/267/out&APM-ID===EO0550-0021819&-out.orig=o' class='full'2 4.49717 47 34.74672+68 40 49.1016EO0550-0021819266.894778+68.68030615.26   1 15.03 15.6 0.1016.57   1 23.16 17.9 1.31   %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	4.712	17 47 34.68000	+68 40 49.3680	N11020005065	266.894500	+68.680380	1993.612	14.73	0.43	15.11	0.41	3	6.65	0.10

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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	4.482	17 47 35.00280	+68 40 48.5832	1586-0151994	266.895845	+68.680162	999	225	1952.6	0	0	2	17.43	19.01
2	4.666	17 47 34.65816	+68 40 49.3320	1586-0151991	266.894409	+68.680370	75	127	1976.8	0	0	5	15.72	14.24	13.68	12.80	12.85
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%3cEM%3e2&%3cFONT%20COLOR=%27#CD5B45%27>%204.666&%3cFONT%20COLOR=%27#CD5B45%27>17%2047%2034.65816&%3cFONT%20COLOR=%27#CD5B45%27>%2b68%2040%2049.3320&1586-0151991&266.894409&%2b68.680370&%2075&127&1976.8&%20%20%20%20%200&%20%20%20%20%200&5&15.72&14.24&13.68&12.80&12.85%3cBR%3e">\Ahref='VizieR-5?-ref=VIZ662331882d0320&-out.add=.&-source=I/284/out&USNO-B1.0===1586-0151986&-out.orig=o' class='full'3 7.22917 47 33.67272+68 40 39.51121586-0151986266.890303+68.6776421181381980.9 -52 -3243  19.46  19.7518.71 4 7.63617 47 33.78888+68 40 38.45281586-0151987266.890787+68.677348999 871964.4 6 -350319.7919.5120.94     5 9.71517 47 33.95880+68 40 35.61241586-0151988266.891495+68.676559 529991978.9 118 -796320.75  20.7919.43   %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	4.479	17 47 35.002656	+68 40 48.57996	1586-0154516	..	266.8958444	+68.6801611	B	0.0	0.0	0.0	0.0	17.430	o			19.010	e
2	4.664	17 47 34.657992	+68 40 49.32984	1586-0154513	YM	266.8944083	+68.6803694	B	0.0	0.0	0.0	0.0	17.310	Y	16.770	Y	12.800	B	16.126	15.244	14.662
3	7.230	17 47 33.672672	+68 40 39.51012	1586-0154508	..	266.8903028	+68.6776417	B	-52.0	4.0	-324.0	5.0					19.750	B
4	7.639	17 47 33.788664	+68 40 38.44992	1586-0154509	..	266.8907861	+68.6773472	B	6.0	95.0	-350.0	2.0	20.940	B			19.510	e
5	9.718	17 47 33.958656	+68 40 35.60988	1586-0154510	..	266.8914944	+68.6765583	B	118.0	1.0	-796.0	72.0	20.790	B			19.430	B

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%3cEM%3e%20%3cFONT%20COLOR=%27#CD5B45%27>Full

%22> _r
arcsec _RAJ2000
"h:m:s" _DEJ2000
"d:m:s"GSC2.3

RAJ2000
degDEJ2000
degEpoch
yrFmag
magjmag
magVmag
magNmag
magClass

a
pixe

1 4.71517 47 34.68024+68 40 49.3716N41S005065266.894501+68.6803811993.61214.7315.11  13.943 6.65 0.10 %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	4.570	17 47 34.65864	+68 40 49.2348	266.894411	+68.680343	-2.2	1.4	16.127	14.662	15.72	13.68	14.24	12.80	12.85	6	0
2	7.429	17 47 33.67224	+68 40 39.2376	266.890301	+68.677566	-57.0	-335.0					19.46	19.75	18.71	3	0
3	7.714	17 47 33.85560	+68 40 38.1180	266.891065	+68.677255	29.3	-361.7			19.79	20.94	19.51			3	1
4	9.140	17 47 33.94944	+68 40 36.2532	266.891456	+68.676737	112.6	-787.0			20.75	20.79		19.43		3	1

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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 4.57017 47 34.65866+68 40 49.2353266.894411+68.680343 0.069 0.06915.106 0.30014.733 0.30014.819 0.40014.452 0.5001989.23001989.2300 -2.2 4.0 1.4 4.0 2 7.71417 47 33.85557+68 40 38.1181266.891065+68.677255 0.163 0.13320.940 0.40019.510 0.40019.752 0.40018.632 0.5001964.49001964.4900 29.3 8.9 -361.7 8.2 3 9.14017 47 33.94947+68 40 36.2530266.891456+68.676737 0.133 0.13320.790 0.40019.430 0.40019.671 0.40018.597 0.5001978.90001978.9000 112.6 7.3 -787.0 7.3 %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	4.544	17 47 34.659213	+68 40 49.25978	794-128376	266.8945372	+68.6803317	2013.394	16.519	0.030	12.1	-4.9	16.127	15.245	14.662			17.297	16.651

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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	[****ClosingBrace(s)Inserted****]
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e-/s&%">\BegDIVclass='sort-down ' </A>dece_
e-/s<Gmag>
mag

Var

1 4.59717 47 34.666507562+68 40 49.25894074266.8944437815 3.308+68.6803497058 7.9821637668315545474560       0.0440 1.8698e+02 3.5592e+0019.845NOT_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	4.575	17 47 34.666892544	+68 40 49.23661512	266.8944453856	+68.6803435042	650146410777473560		-0.144	1.487	16.127	15.245	14.662	15.72	13.68	14.24	12.80	12.85	1637668315545474560	19.845

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