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	0.361	23 55 51.72216	+29 38 28.8204	1125-19996018	358.965509	+29.641339			18.7	17.7	1952.713

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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	0.389	23 55 51.74880	+29 38 28.5612	EO1257-0215873	358.965620	+29.641267	18.13		-1	0.53	5.7	0.06	18.68		-1	1.52	7.1	0.55
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%3cEM%3e1&%3cFONT%20COLOR=%27#CD5B45%27>%200.389&%3cFONT%20COLOR=%27#CD5B45%27>23%2055%2051.74880&%3cFONT%20COLOR=%27#CD5B45%27>%2b29%2038%2028.5612&EO1257-0215873&358.965620&%2b29.641267&18.13&%20&-1&%20%20%200.53&%20%20%205.7&%200.06&18.68&%20&-1&%20%20%201.52&%20%20%207.1&%20%200.55&%20%3cBR%3e">\Ahref='VizieR-5?-ref=VIZ663b21761060e8&-out.add=.&-source=I/267/out&APM-ID===EO0606-0352006&-out.orig=o' class='full'2 0.52223 55 51.73536+29 38 28.9428EO0606-0352006358.965564+29.64137318.01   1 2.77 7.1 0.0619.32  -1 -2.60 5.8 1.31   3 7.69023 55 51.72888+29 38 36.1500EO0606-0351799358.965537+29.64337520.00L 0      21.74  -1 -2.07 2.7 1.74   4 9.39223 55 52.43736+29 38 27.6000EO1257-0215895358.968489+29.64100018.07  -1 0.72 5.9 0.0821.56L 0     3.49   5 9.55623 55 52.45008+29 38 27.6108EO0606-0352056358.968542+29.64100318.37  -1 -0.55 5.9 0.1720.96  -1 -0.24 4.7 2.59   %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	0.036	23 55 51.71880	+29 38 28.4280	N00121238624	358.965495	+29.641230	1993.645			19.22	0.40	0	2.62	0.08
2	9.417	23 55 52.43760	+29 38 27.3876	N00121238622	358.968490	+29.640941	1989.825	18.36	0.39			0	2.19	0.09

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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	0.320	23 55 51.71208	+29 38 28.7628	1196-0600514	358.965467	+29.641323	33	65	1976.8	0	0	5	18.79	17.97	19.12	18.71	18.17
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%3cEM%3e1&%3cFONT%20COLOR=%27#CD5B45%27>%200.320&%3cFONT%20COLOR=%27#CD5B45%27>23%2055%2051.71208&%3cFONT%20COLOR=%27#CD5B45%27>%2b29%2038%2028.7628&1196-0600514&358.965467&%2b29.641323&%2033&%2065&1976.8&%20%20%20%20%200&%20%20%20%20%200&5&18.79&17.97&19.12&18.71&18.17%3cBR%3e">\Ahref='VizieR-5?-ref=VIZ663b21761060e8&-out.add=.&-source=I/284/out&USNO-B1.0===1196-0600517&-out.orig=o' class='full'2 9.13323 55 52.41744+29 38 27.60001196-0600517358.968406+29.641000 45 411982.9 0 04  18.7920.3918.4417.14 %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	0.317	23 55 51.712008	+29 38 28.75992	1196-0625549	YM	358.9654667	+29.6413222	B	0.0	0.0	0.0	0.0	18.350	Y	17.970	Y	18.710	B	17.152	16.227	15.564
2	9.132	23 55 52.417344	+29 38 27.60000	1196-0625552	.M	358.9684056	+29.6410000	B	0.0	0.0	0.0	0.0	20.390	B			18.440	B	16.120	15.458	15.182

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Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	GSC2.3	RAJ2000 deg	DEJ2000 deg	Epoch [****ClosingBrace(s)Inserted****]
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Epoch

%22>%5cFONT SIZE=-1yrFmag
magjmag
magVmag
magNmag
magClass

a
pixe

1 0.28523 55 51.73920+29 38 28.5972N0BF008611358.965580+29.6412771989.82518.7019.2218.6517.760 2.10 0.15 2 9.41623 55 52.43760+29 38 27.3912N0BF008609358.968490+29.6409421989.82518.3620.5018.7717.100 2.19 0.09 %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	0.112	23 55 51.72240	+29 38 28.3524	358.965510	+29.641209	-0.9	-10.9	17.152	15.565	18.79	19.12	17.97	18.71	18.17	6	0
2	9.345	23 55 52.43184	+29 38 27.3624	358.968466	+29.640934	0.6	-6.2	16.120	15.183		20.39	18.79	18.44	17.14	5	0

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

%20

%22>%5cFONT SIZE=-1magNmag
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 0.43023 55 51.73079+29 38 28.0537XPM 239-0948853358.965545+29.641126 1.00 -14.81 1.33 -14.6818.70219.21618.64517.76317.152 0.20616.227 0.20615.565 0.174 93629329418.717.7 34847.19146000M %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	0.248	23 55 51.73370	+29 38 28.6318	358.965557	+29.641287	0.003	0.003	19.216	0.300	18.702	0.300	18.572	0.081	17.698	0.111	2003.7300	2003.7300	-0.9	4.5	-10.9	4.5
2	9.359	23 55 52.43408	+29 38 27.5044	358.968475	+29.640973	0.003	0.004	20.500	0.300	18.359	0.300	18.429	0.082	16.822	0.112	2003.7300	2003.7300	0.6	5.5	-6.2	5.5

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

%20

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

Jmag
mag

Hmag
mag

Kmag
mag

Bmag
mag

Vmag
mag

gmag
mag

rmag
mag

imag
mag

1 0.11323 55 51.729517+29 38 28.05278599-643572358.9655156+29.64126722013.43218.578 0.014 -5.6 37.917.15216.22715.565           2 9.33623 55 52.438170+29 38 27.31609599-643574358.9684650+29.64094752013.19218.048 0.032 -6.5 7.216.12015.45915.183           %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	0.146	23 55 51.725750	+29 38 28.58610	358.9655240	54.00	+29.6412739	51.00	49563+0008611	0	-4.4	1.9	0.4	1.8	12	42.994	18.702	19.216	17.763	18.645	17.152	16.227	15.565
2	9.400	23 55 52.436600	+29 38 27.42116	358.9684858	82.00	+29.6409503	54.00	49563+0008609	0	-1.9	3.1	-4.0	2.1	11	42.994	18.359	20.500	17.095	18.774	16.120	15.459	15.183

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