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	1.956	00 52 31.00008	+22 14 15.8208	1050-00249084	013.129167	+22.237728			18.2	17.5	1953.778
2	2.972	00 52 30.99144	+22 14 17.0916	1050-00249081	013.129131	+22.238081			19.5	18.1	1953.778

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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	1.652	00 52 30.97872	+22 14 15.6732	EO0857-0395256	013.129078	+22.237687	17.62		1	9.31	9.5	0.36	18.48		1	9.91	15.6	0.86
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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	1.244	00 52 30.97224	+22 14 15.2016	N32332037435	013.129051	+22.237556	1987.648	17.05	0.42	17.04	0.43	3	5.94	0.50

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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	1.531	00 52 30.97488	+22 14 15.5616	1122-0014087	013.129062	+22.237656	97	101	1976.5	0	0	5	18.08	17.66	17.66	16.04	17.08
2	1.744	00 52 31.01880	+22 14 13.6104	1122-0014090	013.129245	+22.237114	407	310	1974.7	0	0	2	19.47				18.73
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%3cEM%3e2&%3cFONT%20COLOR=%27#CD5B45%27>%201.744&%3cFONT%20COLOR=%27#CD5B45%27>00%2052%2031.01880&%3cFONT%20COLOR=%27#CD5B45%27>%2b22%2014%2013.6104&1122-0014090&013.129245&%2b22.237114&407&310&1974.7&%20%20%20%20%200&%20%20%20%20%200&2&19.47&%20&%20&%20&18.73%3cBR%3e">\Ahref='VizieR-5?-ref=VIZ6638aec79374f&-out.add=.&-source=I/284/out&USNO-B1.0===1122-0014086&-out.orig=o' class='full'3 2.32800 52 30.96408+22 14 16.55161122-0014086013.129017+22.237931 753941974.2 0 0419.7518.3816.65  17.01 4 5.75200 52 30.99600+22 14 19.98241122-0014089013.129150+22.238884999 701973.2 0 0220.43  19.81     %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	1.528	00 52 30.974664	+22 14 15.56016	1122-0014156	..	013.1290611	+22.2376556	B	0.0	0.0	0.0	0.0	17.660	B			16.040	B
2	1.743	00 52 31.018656	+22 14 13.61004	1122-0014159	..	013.1292444	+22.2371139	B	0.0	0.0	0.0	0.0	19.470	o
3	2.327	00 52 30.964008	+22 14 16.55016	1122-0014155	..	013.1290167	+22.2379306	B	0.0	0.0	0.0	0.0	16.650	B			18.380	e
4	5.749	00 52 30.996000	+22 14 19.97988	1122-0014158	..	013.1291500	+22.2388833	B	0.0	0.0	0.0	0.0	19.810	B

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Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 [****ClosingBrace(s)Inserted****]
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%3cEM%3e%20%3cFONT%20COLOR=%27#CD5B45%27>_DEJ2000

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

RAJ2000
degDEJ2000
degEpoch
yrFmag
magjmag
magVmag
magNmag
magClass

a
pixe

1 1.24900 52 30.97248+22 14 15.2052NBTV007435013.129052+22.2375571987.64817.0517.0418.0517.223 5.94 0.50 2 7.53300 52 30.93552+22 14 21.8904NBTV025198013.128898+22.2394141993.801  21.67    0 1.83 0.37 %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	1.418	00 52 30.97896	+22 14 15.3564	013.129079	+22.237599	1.4	-1.7			18.08	17.66	17.66	16.04	17.08	5	0
2	1.470	00 52 30.99912	+22 14 13.6788	013.129163	+22.237133	-5.5	7.0			19.47				18.73	2	0
3	2.040	00 52 30.96912	+22 14 16.2096	013.129038	+22.237836	1.6	-12.2			19.75	16.65	18.38		17.01	4	0
4	5.491	00 52 30.90096	+22 14 19.8600	013.128754	+22.238850	-28.2	2.9			20.43	19.81				2	0

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Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	RAJ2000 deg	DEJ2000 deg	e_RAJ2000 (...)	e_DEJ2000 [****ClosingBrace(s)Inserted****]
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e_DEJ2000

%20

%22>%5cFONT SIZE=-1arcsecmagBJ
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 1.55200 52 30.97057+22 14 15.6324013.129044+22.237676 0.032 0.08317.043 0.30017.048 0.30017.762 0.08116.877 0.1112009.04002009.0400 1.4 5.5 -1.7 5.5 2 2.04100 52 30.96914+22 14 16.2100013.129038+22.237836 0.115 0.11516.650 0.40018.380 0.40017.912 0.40019.155 0.5001974.26001974.2600 1.6 5.6 -12.2 5.6 %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	1.810	00 52 31.000013	+22 14 15.61802	013.1291667	34.00	+22.2376717	46.00	64483+0007435	4	0.1	1.6	4.3	2.1	11	42.008	17.048	17.043	17.219	18.050

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