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	4.126	17 07 30.85680	+32 46 53.2020	1200-08210668	256.878570	+32.781445			19.0	17.7	1950.383
2	7.151	17 07 31.30080	+32 46 54.1812	1200-08210734	256.880420	+32.781717			19.8	19.3	1950.383

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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 [****ClosingBrace(s)Inserted****]
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Mflag

%22> 1 4.75417 07 30.79344+32 46 53.6700EO1069-0301734256.878306+32.78157518.19   2 8.65 9.1 0.1920.09   1 8.45 9.2 1.91   2 4.81017 07 30.93744+32 46 53.9004EO1132-0353176256.878906+32.78163917.80   1 8.12 10.3 0.1719.27   2 12.67 11.9 1.47   %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	3.473	17 07 30.84672	+32 46 52.5180	N101323222086	256.878528	+32.781255	1989.507			18.72	0.42	3	5.47	0.16
2	4.337	17 07 30.86112	+32 46 53.4216	N10132327876	256.878588	+32.781506	1993.447	17.46	0.42	18.39	0.42	3	4.71	0.34

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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	4.319	17 07 30.87672	+32 46 53.4216	1227-0348719	256.878653	+32.781506	165	128	1976.8	-2	12	5	19.23	18.04	17.37	16.65	17.44
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%3cEM%3e1&%3cFONT%20COLOR=%27#CD5B45%27>%204.319&%3cFONT%20COLOR=%27#CD5B45%27>17%2007%2030.87672&%3cFONT%20COLOR=%27#CD5B45%27>%2b32%2046%2053.4216&1227-0348719&256.878653&%2b32.781506&165&128&1976.8&%20%20%20%20-2&%20%20%20%2012&5&19.23&18.04&17.37&16.65&17.44%3cBR%3e">\Ahref='VizieR-5?-ref=VIZ663d524738450&-out.add=.&-source=I/284/out&USNO-B1.0===1227-0348720&-out.orig=o' class='full'2 5.04017 07 30.90936+32 46 54.15241227-0348720256.878789+32.7817099992351973.9 0 0220.85    18.41   3 6.66217 07 31.21872+32 46 54.43321227-0348723256.880078+32.7817872562491966.0 -32 0321.0320.20  18.74   4 7.25417 07 31.30200+32 46 54.31081227-0348724256.880425+32.7817531593161974.4 0 0520.9419.7920.2919.8118.78 %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	4.318	17 07 30.876672	+32 46 53.42016	1227-0351913	YM	256.8786528	+32.7815056	B	-2.0	5.0	12.0	4.0	18.350	Y	17.500	Y	16.650	B	17.303	16.039	15.614
2	5.038	17 07 30.909336	+32 46 54.14988	1227-0351914	..	256.8787889	+32.7817083	B	0.0	0.0	0.0	0.0	20.850	o			18.410	B
3	6.659	17 07 31.218672	+32 46 54.42996	1227-0351917	..	256.8800778	+32.7817861	B	-32.0	6.0	0.0	6.0	21.030	o			18.740	B
4	7.253	17 07 31.302000	+32 46 54.31008	1227-0351918	..	256.8804250	+32.7817528	B	0.0	0.0	0.0	0.0	20.290	B			19.810	B

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

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%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

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pix

e

1 4.34117 07 30.86112+32 46 53.4252N3JI007876256.878588+32.7815071993.44717.4618.3918.6017.613 4.71 0.34 2 7.74217 07 31.32912+32 46 54.6600N3JI007877256.880538+32.7818501993.44719.5720.70    3 2.48 0.21 %0a%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	4.034	17 07 30.84888	+32 46 53.0940	256.878537	+32.781415	-14.6	3.1	17.303	15.614	19.23	17.37	18.04	16.65	17.44	6	0
2	4.109	17 07 30.86088	+32 46 53.1912	256.878587	+32.781442	20.2	-27.2	17.303	15.614	20.85			18.41		3	1
3	6.548	17 07 31.22064	+32 46 54.2712	256.880086	+32.781742	-34.8	-5.3			21.03		20.20	18.74		3	0
4	7.487	17 07 31.30272	+32 46 54.6240	256.880428	+32.781840	0.2	7.1			20.94	20.29	19.79	19.81	18.78	5	0

%0a%0a

Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	ID	RAICRS deg	DEICRS deg	pmRAp mas/yr	pmDEp mas/yr	pmRAx [****ClosingBrace(s)Inserted****]
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pmRAx

%20

%22>%5cFONT SIZE=-1mas/yrpmDEx
mas/yr

Fmag
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Bjmag
mag

Vmag
mag

Nmag
mag

Jmag
mag

e_
mag

Hmag
mag

e_
mag

Kmag
mag

e_
mag

2Mkey

Bmag
mag

Rmag
mag

Fld

dT
yr

fg

fs

M

1 3.87917 07 30.82346+32 46 52.8674XPM 245-0369728256.878431+32.781352 -9.59 -10.62 -9.37 -10.3417.46218.39418.60417.60717.303 0.21516.039 0.17915.614 0.179 21508012519.017.7 33247.88620000M %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	magG mag	e_ mag	magGrvs mag	e_ mag	alphaEpoch yr	deltaEpoch yr	pmRA mas/yr	e_ (...)	pmDE mas/yr	e_ (...)
1	3.999	17 07 30.84801	+32 46 53.0558	256.878533	+32.781404	0.017	0.022	17.370	0.400	16.650	0.400	18.232	0.082	17.113	0.111	2001.3900	2001.3900	-14.6	4.9	3.1	4.9
2	6.548	17 07 31.22068	+32 46 54.2707	256.880086	+32.781742	0.133	0.133	21.030	0.400	18.740	0.400	18.849	0.400	17.227	0.500	1966.0800	1966.0800	-34.8	6.8	-5.3	6.8
3	7.259	17 07 31.32059	+32 46 54.0801	256.880502	+32.781689	0.020	0.020	20.703	0.300	19.574	0.300	20.007	0.089	19.003	0.117	2001.3900	2001.3900	0.2	5.2	7.1	5.2

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Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	URAT1	RAICRS deg	DEICRS deg	Epoch yr	f.mag [****ClosingBrace(s)Inserted****]
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f.mag

%20

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

pmRA
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pmDE
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Jmag
mag

Hmag
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imag
mag

1 4.03517 07 30.826161+32 46 52.89589614-221668256.8785439+32.78141612013.47618.117 0.013 22.8 15.017.30316.03915.614           %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	4.343	17 07 30.852613	+32 46 53.41302	256.8785526	29.00	+32.7815036	55.00	53742+0007876	4	-2.7	1.1	3.8	2.2	14	46.157	17.462	18.394	17.607	18.604	17.303	16.039	15.614

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