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	1.548	23 55 07.35552	+26 27 26.1612	1125-19990930	358.780648	+26.457267			18.2	16.0	1953.608

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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	1.625	23 55 07.35816	+26 27 26.0532	EO0779-0079942	358.780659	+26.457237	14.94		1	23.59	12.5	0.16	18.30		1	9.53	10.1	3.37
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%3cEM%3e1&%3cFONT%20COLOR=%27#CD5B45%27>%201.625&%3cFONT%20COLOR=%27#CD5B45%27>23%2055%2007.35816&%3cFONT%20COLOR=%27#CD5B45%27>%2b26%2027%2026.0532&EO0779-0079942&358.780659&%2b26.457237&14.94&%20&%201&%20%2023.59&%20%2012.5&%200.16&18.30&%20&%201&%20%20%209.53&%20%2010.1&%20%203.37&%20%3cBR%3e">\Ahref='VizieR-5?-ref=VIZ663ba13910b962&-out.add=.&-source=I/267/out&APM-ID===EO0205-0064794&-out.orig=o' class='full'2 1.84623 55 07.37088+26 27 25.9020EO0205-0064794358.780712+26.45719515.97   1 9.84 11.6 0.0418.98   1 3.88 8.2 3.01   %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	1.658	23 55 07.35288	+26 27 25.8624	N00120136859	358.780637	+26.457184	1990.661	14.87	0.42	17.18	0.42	3	7.95	0.32

%0a%0a%3cP%3e%0a%3cFONT%20SIZE=%27-1%27%3e%3cEM%3e%3cFONT%20COLOR=%27#0000FF%27>%3cB%3eNote:%20The%20%3cB%3eUSNO-B%20Catalog%20presents%20positions,%20proper%20motions,%20%0amagnitudes%20un%20blue,%20red%20and%20infrared,%20as%20well%20as%20star/galaxy%20estimators%0afor%201,045,175,762%20objects%20derived%20from%203,648,832,040%20separate%20observations.%0aThe%20data%20were%20taken%20from%20scans%20of%207,435%20Schmidt%20plates%0ataken%20from%20various%20sky%20surveys%20during%20the%20last%2050%20years.%3cBR%3e%0aUSNO-B1.0%20catalog%20was%20created%20by%20Dave%20Monet%20and%20collaborators%0aat%20http://www.nofs.navy.mil/data/fchpix/%20%3cBR%3e%0a%3cB%3e%3cFONT%20COLOR=%27#EE0000%27>%20Note%20that%20the%20star/galaxy%20estimators%20may%20be%20mixed%20up%0a%20in%20dense%20regions.%0a%3cP%3e%0a

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	1.517	23 55 07.34736	+26 27 26.0100	1164-0596724	358.780614	+26.457225	49	35	1977.4	0	0	5	18.35	15.35	16.53	15.06	15.26
2	4.367	23 55 07.54608	+26 27 28.5624	1164-0596725	358.781442	+26.457934	999	79	1979.6	-110	-212	3	19.69		20.46		18.66
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%3cEM%3e2&%3cFONT%20COLOR=%27#CD5B45%27>%204.367&%3cFONT%20COLOR=%27#CD5B45%27>23%2055%2007.54608&%3cFONT%20COLOR=%27#CD5B45%27>%2b26%2027%2028.5624&1164-0596725&358.781442&%2b26.457934&999&%2079&1979.6&%20%20-110&%20%20-212&3&19.69&%20&20.46&%20&18.66%3cBR%3e">\Ahref='VizieR-5?-ref=VIZ663ba13910b962&-out.add=.&-source=I/284/out&USNO-B1.0===1164-0596726&-out.orig=o' class='full'3 4.57423 55 07.57008+26 27 25.22161164-0596726358.781542+26.4570067169991972.6 0 0220.95      18.54 4 5.83323 55 07.08144+26 27 21.39121164-0596722358.779506+26.4559428055851972.6 0 02  19.54  19.98   5 8.97923 55 07.91736+26 27 27.21241164-0596732358.782989+26.4575599999991992.7 0 02      20.1919.28 %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	1.517	23 55 07.347336	+26 27 26.01000	1164-0626820	YM	358.7806139	+26.4572250	B	0.0	0.0	0.0	0.0	18.270	Y			15.060	B	15.535	15.119	14.320
2	4.365	23 55 07.546008	+26 27 28.55988	1164-0626821	..	358.7814417	+26.4579333	B	-110.0	40.0	-212.0	2.0	20.460	B
3	4.574	23 55 07.570008	+26 27 25.22016	1164-0626822	..	358.7815417	+26.4570056	B	0.0	0.0	0.0	0.0	20.950	o
4	5.835	23 55 07.081344	+26 27 21.39012	1164-0626818	..	358.7795056	+26.4559417	B	0.0	0.0	0.0	0.0					19.980	B
5	8.978	23 55 07.917336	+26 27 27.20988	1164-0626828	..	358.7829889	+26.4575583	B	0.0	0.0	0.0	0.0					20.190	B

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

%22>%5cFONT SIZE=-1arcsec _RAJ2000
"h:m:s" _DEJ2000
"d:m:s"GSC2.3

RAJ2000
degDEJ2000
degEpoch
yrFmag
magjmag
magVmag
magNmag
magClass

a
pixe

1 1.65923 55 07.35312+26 27 25.8660N0AV006859358.780638+26.4571851990.66114.8717.1817.1315.563 7.95 0.32 %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	1.602	23 55 07.35072	+26 27 25.9200	358.780628	+26.457200	-2.4	-1.6	15.536	14.320	18.35	16.53	15.35	15.06	15.26	6	0
2	3.889	23 55 07.51272	+26 27 28.3932	358.781303	+26.457887	-118.2	-215.4			19.69	20.46			18.66	3	0
3	4.958	23 55 07.58328	+26 27 28.8900	358.781597	+26.458025	18.5	74.2			20.95				18.54	2	0
4	6.051	23 55 07.10112	+26 27 21.0564	358.779588	+26.455849	23.4	-19.9					19.54	19.98		2	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	[****ClosingBrace(s)Inserted****]
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mas/yr&%">\BegDIVclass='sort-down ' </A>decpmDEx
mas/yrFmag
magBjmag
magVmag
magNmag
magJmag
mage_
magHmag
mage_
magKmag
mage_
mag2Mkey

Bmag
magRmag
magFld

dT
yrfg

fs

M

1 1.55123 55 07.34734+26 27 25.9451XPM 232-0877566358.780614+26.457207 -1.08 -1.40 -0.87 -1.3014.86817.17717.12715.55715.536 0.08815.120 0.11614.320 0.087 93626162818.216.0 40446.29628700M %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	1.547	23 55 07.34802	+26 27 25.9670	358.780617	+26.457213	0.006	0.006	17.177	0.300	14.868	0.300	17.005	0.081	15.703	0.111	2009.7900	2009.7900	-2.4	4.0	-1.6	4.0

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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 mas/yr	pmDE mas/yr	Jmag [****ClosingBrace(s)Inserted****]
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Jmag

%20

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

Kmag
mag

Bmag
mag

Vmag
mag

gmag
mag

rmag
mag

imag
mag

1 1.49923 55 07.348456+26 27 25.93855583-605488358.7805955+26.45720812013.25217.048 0.018 -5.6 0.815.53615.12014.320           %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	1.680	23 55 07.356663	+26 27 25.90194	358.7806528	59.00	+26.4571950	96.00	49543+0006859	4	2.0	2.0	-1.4	3.3	12	44.169	14.868	17.177	15.557	17.127	15.536	15.120	14.320

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