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	3.125	13 48 12.04008	+45 44 27.7728	1350-08330707	207.050167	+45.741048			18.6	17.4	1956.267

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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	3.398	13 48 12.01008	+45 44 27.7512	EO1593-0198819	207.050042	+45.741042	17.84		1	10.35	11.2	0.16	19.84		2	13.32	13.4	2.00
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Note: The construction of the GSC-II is still in progress: this version has no proper motions, and the magnitude limits are 18.5 in F (red) and 19.5 in J (blue). The data are copyrighted, check the data use Policy.

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	2.942	13 48 12.04920	+45 44 27.5496	N13033208288	207.050205	+45.740986	1996.367	17.22	0.41	17.96	0.41	3	5.94	0.53

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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	0.656	13 48 12.36552	+45 44 26.1528	1357-0248941	207.051523	+45.740598	999	900	1976.3	0	0	2	20.41			20.77
2	2.656	13 48 12.11280	+45 44 28.0716	1357-0248940	207.050470	+45.741131	125	732	1970.6	26	4	3	19.49	17.75			16.96
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%3cEM%3e2&%3cFONT%20COLOR=%27#CD5B45%27>%202.656&%3cFONT%20COLOR=%27#CD5B45%27>13%2048%2012.11280&%3cFONT%20COLOR=%27#CD5B45%27>%2b45%2044%2028.0716&1357-0248940&207.050470&%2b45.741131&125&732&1970.6&%20%20%20%2026&%20%20%20%20%204&3&19.49&17.75&%20&%20&16.96%3cBR%3e">\Ahref='VizieR-5?-ref=VIZ663b890c35c084&-out.add=.&-source=I/284/out&USNO-B1.0===1357-0248939&-out.orig=o' class='full'3 3.27213 48 12.02472+45 44 27.78001357-0248939207.050103+45.741050 721291985.0 -20 -10419.82  18.1217.1817.56 4 5.87813 48 11.80272+45 44 28.96081357-0248937207.049178+45.741378715 341977.8 0 0220.58      18.12 %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	0.655	13 48 12.365328	+45 44 26.14992	1357-0252688	..	207.0515222	+45.7405972	B	0.0	0.0	0.0	0.0	20.410	o			20.770	B
2	2.656	13 48 12.112656	+45 44 28.07016	1357-0252687	..	207.0504694	+45.7411306	B	26.0	3.0	4.0	20.0	19.490	o			17.750	e
3	3.272	13 48 12.024672	+45 44 27.78000	1357-0252686	YM	207.0501028	+45.7410500	B	-20.0	3.0	-10.0	5.0	18.120	B	17.740	Y	17.180	B	16.644	15.794	15.282
4	5.878	13 48 11.802672	+45 44 28.96008	1357-0252684	..	207.0491778	+45.7413778	B	0.0	0.0	0.0	0.0	20.580	o

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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 2.94113 48 12.04944+45 44 27.5532N5Q0008288207.050206+45.7409871996.36717.2217.9618.2217.043 5.94 0.53 %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	0.858	13 48 12.37632	+45 44 25.9116	207.051568	+45.740531	33.2	-21.7			20.41			20.77		2	0
2	2.924	13 48 12.06576	+45 44 27.8448	207.050274	+45.741068	10.6	-3.6	16.645	15.283	19.49		17.75		16.96	4	0
3	3.165	13 48 12.03624	+45 44 27.7836	207.050151	+45.741051	-21.7	-6.0	16.645	15.283	19.82	18.12		17.18	17.56	5	0
4	5.810	13 48 11.79696	+45 44 28.6692	207.049154	+45.741297	8.0	-2.3			20.58				18.12	2	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 mas/yr	[****ClosingBrace(s)Inserted****]
">

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 3.09013 48 12.04966+45 44 27.8843XPM 271-0371550207.050207+45.741079 6.53 -0.98 6.75 -0.7317.22117.95518.21917.03916.645 0.14415.794 0.14915.283 0.190 62039831818.617.4 17443.05354700M %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	0.858	13 48 12.37633	+45 44 25.9119	207.051568	+45.740531	0.163	0.163	20.410	0.400	20.770	0.400	20.646	0.400	20.845	0.500	1976.3200	1976.3200	33.2	8.1	-21.7	8.1
2	2.884	13 48 12.05486	+45 44 27.5393	207.050229	+45.740983	0.052	0.021	17.955	0.300	17.221	0.300	17.951	0.082	16.833	0.111	2003.1900	2003.1900	-21.7	6.0	-6.0	6.0
3	2.925	13 48 12.06573	+45 44 27.8452	207.050274	+45.741068	0.097	0.097	19.490	0.400	17.750	0.400	17.978	0.400	16.663	0.500	1984.0200	1984.0200	10.6	4.7	-3.6	4.7

%0a%0a%3cP%3e%0a%3cFONT%20SIZE=%27-1%27%3e%3cEM%3e%3cFONT%20COLOR=%27#0000FF%27>%3cB%3eNote:%20%3cP%3e%0a