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	6.253	00 06 10.70208	+12 20 50.0532	0975-00022790	001.544592	+12.347237			18.8	17.0	1949.882

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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	3.169	00 06 10.82880	+12 20 57.9120	EO0009-0124900	001.545120	+12.349420	19.97		-1	1.95	3.5	0.35	21.55	L	0			1.58
2	6.889	00 06 10.70400	+12 20 49.2828	EO0009-0124997	001.544600	+12.347023	17.71		2	12.89	13.3	0.46	19.58		2	10.73	14.5	1.87
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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	6.144	00 06 10.69488	+12 20 50.2620	N32021013402	001.544562	+12.347295	1991.697	17.31	0.43	18.04	0.42	3	5.14	0.48

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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	2.649	00 06 10.77072	+12 20 54.4020	1023-0001200	001.544878	+12.348445	281	947	1983.2	128	-276	4	20.88		19.55	18.57	18.72
2	3.713	00 06 10.70544	+12 20 56.5224	1023-0001199	001.544606	+12.349034	326	999	1979.1	10	124	3		17.29	20.27		17.85
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%3cEM%3e2&%3cFONT%20COLOR=%27#CD5B45%27>%203.713&%3cFONT%20COLOR=%27#CD5B45%27>00%2006%2010.70544&%3cFONT%20COLOR=%27#CD5B45%27>%2b12%2020%2056.5224&1023-0001199&001.544606&%2b12.349034&326&999&1979.1&%20%20%20%2010&%20%20%20124&3&%20&17.29&20.27&%20&17.85%3cBR%3e">\Ahref='VizieR-5?-ref=VIZ6628c408b6c72&-out.add=.&-source=I/284/out&USNO-B1.0===1023-0001198&-out.orig=o' class='full'3 4.26300 06 10.69800+12 20 52.91161023-0001198001.544575+12.3480312365711975.0 0 0520.5318.4518.4918.5118.20 4 6.12100 06 10.66080+12 20 50.70121023-0001197001.544420+12.347417 942071976.7 -16 18519.7417.4916.0515.8016.02 5 9.37300 06 10.59936+12 20 47.31001023-0001194001.544164+12.3464754971391977.8 -30 28319.92  18.56  17.72 %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	2.650	00 06 10.770672	+12 20 54.39984	1023-0001214	..	001.5448778	+12.3484444	B	128.0	11.0	-276.0	37.0	19.550	B			18.570	B
2	3.714	00 06 10.705344	+12 20 56.51988	1023-0001213	..	001.5446056	+12.3490333	B	10.0	11.0	124.0	45.0	20.270	B			17.290	e
3	4.264	00 06 10.698000	+12 20 52.91016	1023-0001212	..	001.5445750	+12.3480306	B	0.0	0.0	0.0	0.0	18.490	B			18.510	B
4	6.123	00 06 10.660656	+12 20 50.70012	1023-0001211	YM	001.5444194	+12.3474167	B	-16.0	2.0	18.0	6.0	18.350	Y	17.970	Y	15.800	B	16.047	16.109	15.128
5	9.373	00 06 10.599336	+12 20 47.31000	1023-0001208	..	001.5441639	+12.3464750	B	-30.0	16.0	28.0	4.0	18.560	B

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%3cEM%3e%20%3cFONT%20COLOR=%27#CD5B45%27>Full

%22> _r
arcsec _RAJ2000
"h:m:s" _DEJ2000
"d:m:s"GSC2.3

RAJ2000
degDEJ2000
degEpoch
yrFmag
magjmag
magVmag
magNmag
magClass

a
pixe

1 6.13900 06 10.69512+12 20 50.2656NB69003402001.544563+12.3472961991.69717.3118.0418.1517.283 5.14 0.48 %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	2.660	00 06 10.76712	+12 20 54.5424	001.544863	+12.348484	125.0	-275.9			20.88	19.55		18.57	18.72	4	0
2	3.938	00 06 10.69968	+12 20 56.9004	001.544582	+12.349139	7.9	127.8				20.27	17.29		17.85	3	1
3	5.545	00 06 10.65816	+12 20 51.5616	001.544409	+12.347656	-13.0	-34.1	16.048	15.129	20.53	18.49	18.45	18.51	18.20	6	1
4	6.107	00 06 10.65072	+12 20 50.8596	001.544378	+12.347461	-20.5	18.7	16.048	15.129	19.74	16.05	17.49	15.80	16.02	6	0
5	9.640	00 06 10.58544	+12 20 47.1228	001.544106	+12.346423	-36.3	22.6			19.92	18.56			17.72	3	0

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Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	ID	RAICRS deg	DEICRS [****ClosingBrace(s)Inserted****]
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DEICRS

%20

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

pmDEp
mas/yr

pmRAx
mas/yr

pmDEx
mas/yr

Fmag
mag

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 6.01300 06 10.64089+12 20 51.1441XPM 204-0000940001.544337+12.347540 -18.42 19.66 -18.35 20.0017.30518.04018.14817.27616.048  16.109 0.16115.129  124045142518.817.0 46547.64497800M %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	2.660	00 06 10.76712	+12 20 54.5421	001.544863	+12.348484	0.115	0.115	19.550	0.400	18.570	0.400	18.778	0.400	17.965	0.500	1983.2500	1983.2500	125.0	5.9	-275.9	5.9
2	3.938	00 06 10.69965	+12 20 56.8999	001.544582	+12.349139	0.133	0.133	20.270	0.400	17.290	0.400	17.038	0.400	15.119	0.500	1979.1400	1979.1400	7.9	6.4	127.8	6.4
3	5.546	00 06 10.65811	+12 20 51.5621	001.544409	+12.347656	0.078	0.089	18.490	0.400	18.510	0.400	18.488	0.400	18.422	0.500	1984.1400	1984.1400	-13.0	4.1	-34.1	4.2
4	6.465	00 06 10.68804	+12 20 49.9382	001.544533	+12.347205	0.018	0.025	18.040	0.300	17.305	0.300	16.891	0.082	15.727	0.111	2008.8200	2008.8200	-20.5	4.0	18.7	4.0

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