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	2.919	21 29 53.11944	+04 40 55.0920	0900-19649927	322.471331	+04.681970			18.9	17.5	1952.631

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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	4.494	21 29 53.07000	+04 40 56.5104	EO0552-0355308	322.471125	+04.682364	17.46		1	18.29	11.5	0.35	19.41		2	14.39	9.5	1.95
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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	4.761	21 29 53.08656	+04 40 56.9856	N00203322522	322.471194	+04.682496	1995.582	16.13	0.42	17.00	0.43	3	5.71	0.08

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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	2.857	21 29 53.14416	+04 40 55.2828	0946-0560304	322.471434	+04.682023	413	642	1973.5	0	0	4	19.48	17.74	18.63		17.89
2	4.956	21 29 53.07072	+04 40 57.0720	0946-0560302	322.471128	+04.682520	301	416	1977.9	0	0	5	19.40	18.09	18.50	15.13	15.16
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%3cEM%3e2&%3cFONT%20COLOR=%27#CD5B45%27>%204.956&%3cFONT%20COLOR=%27#CD5B45%27>21%2029%2053.07072&%3cFONT%20COLOR=%27#CD5B45%27>%2b04%2040%2057.0720&0946-0560302&322.471128&%2b04.682520&301&416&1977.9&%20%20%20%20%200&%20%20%20%20%200&5&19.40&18.09&18.50&15.13&15.16%3cBR%3e">\Ahref='VizieR-5?-ref=VIZ663c9a1c78e5&-out.add=.&-source=I/284/out&USNO-B1.0===0946-0560305&-out.orig=o' class='full'3 6.21121 29 53.18016+04 40 58.99080946-0560305322.471584+04.6830538824541973.0 0 0219.50      18.06 4 6.41321 29 53.08944+04 40 58.83240946-0560303322.471206+04.6830091062831981.2 -62 314319.03  16.67  15.98 5 8.79621 29 52.76400+04 40 57.92160946-0560296322.469850+04.682756 596751973.0 0 02  18.71    18.24 %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	2.856	21 29 53.143992	+04 40 55.27992	0946-0615867	..	322.4714333	+04.6820222	B	0.0	0.0	0.0	0.0	18.630	B			17.740	e
2	4.955	21 29 53.070672	+04 40 57.06984	0946-0615865	..	322.4711278	+04.6825194	B	0.0	0.0	0.0	0.0	18.500	B			15.130	B
3	6.211	21 29 53.179992	+04 40 58.99008	0946-0615868	..	322.4715833	+04.6830528	B	0.0	0.0	0.0	0.0	19.500	o
4	6.411	21 29 53.089344	+04 40 58.82988	0946-0615866	..	322.4712056	+04.6830083	B	-62.0	3.0	314.0	10.0	16.670	B
5	8.795	21 29 52.764000	+04 40 57.92016	0946-0615859	..	322.4698500	+04.6827556	B	0.0	0.0	0.0	0.0					18.710	e

%0a%0a%3cP%3e%0a%3cFONT%20SIZE=%27-1%27%3e%3cEM%3e%3cFONT%20COLOR=%27#0000FF%27>%3cB%3eNote:%20This%20version%20of%20the%20%0a%3cB%3eGSC-II%0ahas%20no%20proper%20motions,%20but%20the%20limits%20on%20brightness%20which%20existed%20on%0a%20%28F<18.5,%20B_j<19.5%29%20were%20removed.%0a%25The%20data%20are%20%3cB%3e%3cFONT%20COLOR=%27#0000CD%27>copyrighted,%20check%0a%25the%20%3cB%3edata%20use%20Policy.%0a%3cP%3e%0a

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 4.76121 29 53.08656+04 40 56.9856N0FY002522322.471194+04.6824961995.58216.1317.0017.9416.983 5.71 0.08 %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	3.489	21 29 53.14728	+04 40 56.0244	322.471447	+04.682229	9.2	12.4			19.48	18.63	17.74		17.89	4	1
2	4.950	21 29 53.05056	+04 40 56.8632	322.471044	+04.682462	-7.1	-21.9			19.40	18.50	18.09	15.13	15.16	5	1
3	6.411	21 29 53.08728	+04 40 58.8180	322.471197	+04.683005	-64.6	309.9			19.03	16.67			15.98	3	0
4	6.560	21 29 53.18856	+04 40 59.3616	322.471619	+04.683156	19.4	4.0			19.50				18.06	2	0
5	8.649	21 29 52.76400	+04 40 57.6624	322.469850	+04.682684	-0.6	-23.1					18.71		18.24	2	0

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

%20

%22>%5cFONT SIZE=-1dege_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 3.48921 29 53.14728+04 40 56.0241322.471447+04.682229 0.115 0.11518.630 0.40017.740 0.40017.935 0.40017.186 0.5001973.57001973.5700 9.2 5.5 12.4 5.5 2 4.86621 29 53.09235+04 40 57.1532322.471218+04.682543 0.028 0.02417.002 0.30016.131 0.30017.518 0.08316.248 0.1122005.73002005.7300 -7.1 5.0 -21.9 5.0 %0a%0a%3cP%3e%0a%3cFONT%20SIZE=%27-1%27%3e%3cEM%3e%3cFONT%20COLOR=%27#0000FF%27>%3cB%3eNote:%20%3cP%3e%0a

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	4.998	21 29 53.074608	+04 40 57.15580	322.4711442	50.00	+04.6825433	66.00	49726+0002522	4	-10.3	2.2	22.3	3.0	5	42.993	16.131	17.002	16.980	17.935

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