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	0.279	12 34 57.51480	+02 51 24.5016	0900-07185527	188.739645	+02.856806			17.2	15.5	1956.188

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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	0.303	12 34 57.51072	+02 51 24.1416	EO1560-0199908	188.739628	+02.856706	16.42		1	6.09	18.1	0.29	18.43		1	18.25	12.1	2.01
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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	0.146	12 34 57.52008	+02 51 24.3900	N1203231353	188.739667	+02.856775	1996.271	15.08	0.41	16.51	0.41	3	6.99	0.38

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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	0.399	12 34 57.50952	+02 51 24.5916	0928-0284938	188.739623	+02.856831	70	178	1979.7	8	6	5	17.64	15.09	15.79	14.52	15.01
2	5.740	12 34 57.24552	+02 51 20.4228	0928-0284936	188.738523	+02.855673	89	205	1973.7	0	0	2	20.08			19.69
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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	0.400	12 34 57.509328	+02 51 24.59016	0928-0286332	YM	188.7396222	+02.8568306	B	8.0	2.0	6.0	6.0	18.350	Y	17.080	Y	14.520	B	15.833	15.074	14.571
2	5.744	12 34 57.245328	+02 51 20.41992	0928-0286330	..	188.7385222	+02.8556722	B	0.0	0.0	0.0	0.0	20.080	o			19.690	B
3	9.327	12 34 56.935344	+02 51 21.44016	0928-0286328	..	188.7372306	+02.8559556	B	-144.0	38.0	-50.0	22.0	21.330	B			20.260	B

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Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	[****ClosingBrace(s)Inserted****]
">

%22d:m:s%22&%">\BegDIVclass='sort-down ' </A>stringGSC2.3

RAJ2000
deg

DEJ2000
degEpoch
yrFmag
magjmag
magVmag
magNmag
magClass

a
pixe

1 0.14612 34 57.52008+02 51 24.3900N4X9000353188.739667+02.8567751996.27115.0816.5116.6014.983 6.99 0.38 %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	0.512	12 34 57.49896	+02 51 24.0300	188.739579	+02.856675	-6.6	-9.0	15.833	14.572	17.64	15.79	15.09	14.52	15.01	6	1
2	5.907	12 34 57.22848	+02 51 20.4588	188.738452	+02.855683	-17.7	-0.1			20.08			19.69		2	0
3	9.848	12 34 56.89584	+02 51 21.5964	188.737066	+02.855999	-160.4	-51.7			19.44	21.33	18.04	20.26	18.69	5	1

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

%20

%22>%5cFONT SIZE=-1magBjmag
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 0.67512 34 57.49632+02 51 23.8211XPM 185-0313827188.739568+02.856617 -6.21 -13.72 -6.51 -13.7615.08016.51316.60014.98115.833 0.13715.075 0.14514.572 0.143 84807138117.215.5 55643.99265700M %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	0.373	12 34 57.50296	+02 51 24.3168	188.739596	+02.856755	0.007	0.006	16.513	0.300	15.080	0.300	16.394	0.080	15.192	0.110	2000.3300	2000.3300	-6.6	4.2	-9.0	4.2
2	5.907	12 34 57.22847	+02 51 20.4591	188.738452	+02.855683	0.163	0.163	20.080	0.400	19.690	0.400	19.781	0.400	19.400	0.500	1973.7400	1973.7400	-17.7	9.3	-0.1	9.3
3	9.848	12 34 56.89585	+02 51 21.5959	188.737066	+02.855999	0.103	0.103	21.330	0.400	20.260	0.400	20.479	0.400	19.603	0.500	1978.7700	1978.7700	-160.4	5.5	-51.7	5.5

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