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	19.181	01 34 04.55736	+30 22 28.4232	1200-00651328	023.518989	+30.374562			18.5	19.2	1949.973

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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	3.929	01 34 05.45952	+30 22 40.6128	EO0030-0234950	023.522748	+30.377948	17.51		-1	-1.19	6.3	0.08	21.98		-1	0.57	3.4	4.48
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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	1.487	01 34 05.64144	+30 22 39.9324	N330102211200	023.523506	+30.377759	1991.763	17.92	0.32			0	2.69	0.20
2	19.701	01 34 04.50720	+30 22 28.4376	N330102211123	023.518780	+30.374566	1992.750			19.40	0.32	3	3.11	0.19

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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	1.416	01 34 05.64816	+30 22 40.0116	1203-0021857	023.523534	+30.377781	184	89	1981.1	52	-18	4		18.32	20.57	18.86	15.99
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%3cEM%3e1&%3cFONT%20COLOR=%27#CD5B45%27>%201.416&%3cFONT%20COLOR=%27#CD5B45%27>01%2034%2005.64816&%3cFONT%20COLOR=%27#CD5B45%27>%2b30%2022%2040.0116&1203-0021857&023.523534&%2b30.377781&184&%2089&1981.1&%20%20%20%2052&%20%20%20-18&4&%20&18.32&20.57&18.86&15.99%3cBR%3e">\Ahref='VizieR-5?-ref=VIZ663768cb6a43a&-out.add=.&-source=I/284/out&USNO-B1.0===1203-0021849&-out.orig=o' class='full'211.08201 34 05.00472+30 22 34.38121203-0021849023.520853+30.3762172673781978.1 0 0320.19  20.0920.19   313.91001 34 04.83216+30 22 32.59201203-0021847023.520134+30.3757203015551971.3 0 0219.67  20.34     419.96001 34 04.44816+30 22 29.12161203-0021844023.518534+30.374756236 741964.2 -24 12319.7719.7819.55     526.27201 34 05.48736+30 23 05.76241203-0021855023.522864+30.3849349999991970.8 0 0219.93    20.19   %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	1.417	01 34 05.647992	+30 22 40.01016	1203-0022086	YM	023.5235333	+30.3777806	B	52.0	7.0	-18.0	3.0	20.570	B	17.970	Y	18.860	B	13.930	13.301	12.980
2	11.084	01 34 05.004672	+30 22 34.38012	1203-0022077	..	023.5208528	+30.3762167	B	0.0	0.0	0.0	0.0	20.090	B			20.190	B
3	13.913	01 34 04.831992	+30 22 32.58984	1203-0022075	..	023.5201333	+30.3757194	B	0.0	0.0	0.0	0.0	20.340	B
4	19.963	01 34 04.447992	+30 22 29.12016	1203-0022072	..	023.5185333	+30.3747556	B	-24.0	5.0	12.0	1.0	19.550	B			19.780	e
5	26.270	01 34 05.487336	+30 23 05.75988	1203-0022084	..	023.5228639	+30.3849333	B	0.0	0.0	0.0	0.0	19.930	o			20.190	B

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

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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 1.48501 34 05.64168+30 22 39.9360NBWQ011200023.523507+30.3777601991.76317.9220.8518.7115.530 2.69 0.20 2 6.90501 34 06.02352+30 22 33.7512NBWQ018565023.525098+30.3760421992.750  22.05    3 1.49 0.40 3 9.71201 34 05.12568+30 22 34.4316NBWQ011147023.521357+30.3762311991.76320.2220.54    3 1.84 0.54 413.40601 34 04.72560+30 22 38.2368NBWQ018573023.519690+30.3772881992.750  21.88    3 1.59 0.37 516.30701 34 06.93504+30 22 45.4476NBWQ011228023.528896+30.3792911991.76320.38      3 1.44 0.36 619.20601 34 04.54176+30 22 28.6608NBWQ011123023.518924+30.3746281991.76319.6619.4018.78  3 1.91 0.09 719.46301 34 04.50552+30 22 28.8912NBWQ018569023.518773+30.3746921992.750  20.24    3 4.31 0.59 823.51801 34 06.80808+30 22 58.8900NBWQ011304023.528367+30.3830251991.76320.1420.80    0 1.58 0.33 926.02301 34 03.89592+30 22 49.6344NBWQ018613023.516233+30.3804541992.750  21.55    3 2.25 0.50 1026.71601 34 06.77232+30 23 02.9688NBWQ011336023.528218+30.3841581991.76320.1821.16    3 1.46 0.14 1127.85801 34 05.32200+30 23 07.0080NBWQ011355023.522175+30.3852801991.76319.75      0 1.73 0.26 1229.96201 34 04.77024+30 22 12.6048NBWQ011017023.519876+30.3701681991.76319.80      3 2.94 0.56 %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	1.127	01 34 05.66808	+30 22 39.7164	023.523617	+30.377699	54.4	-24.9	13.931	12.980		20.57	18.32	18.86	15.99	5	0
2	11.077	01 34 05.00112	+30 22 34.4784	023.520838	+30.376244	-4.6	3.0			20.19	20.09		20.19		3	0
3	13.862	01 34 04.81680	+30 22 33.0348	023.520070	+30.375843	-7.6	10.0			19.67	20.34				2	0
4	19.928	01 34 04.46136	+30 22 28.9128	023.518589	+30.374698	-22.1	8.1			19.77	19.55	19.78			3	0
5	28.499	01 34 05.28144	+30 23 07.5516	023.522006	+30.385431	-56.9	36.9			19.93			20.19		2	0

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

e_RAJ2000

%20

%22>%5cFONT SIZE=-1(...)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 1.14401 34 05.66751+30 22 39.8641023.523615+30.377740 0.007 0.00720.854 0.30017.923 0.30017.706 0.40015.804 0.5002009.08002009.0800 54.4 5.1 -24.9 5.1 2 9.79701 34 05.12936+30 22 34.2074023.521372+30.376169 0.400 0.40020.542 0.30020.222 0.30020.295 0.40019.968 0.5001991.76001991.7600 5.9 22.4 -26.9 11.3 311.07701 34 05.00113+30 22 34.4782023.520838+30.376244 0.133 0.13320.090 0.40020.190 0.40020.145 0.40020.141 0.5001978.15001978.1500 -4.6 6.7 3.0 6.7 419.25701 34 04.53180+30 22 28.7567023.518883+30.374655 0.400 0.40019.398 0.30019.658 0.30019.564 0.40019.686 0.5001991.76001991.7600 -15.4 12.8 11.9 5.0 519.92901 34 04.46131+30 22 28.9130023.518589+30.374698 0.133 0.13320.240 0.30019.780 0.40019.888 0.40019.455 0.5001964.22001964.2200 -22.1 6.6 8.1 6.6 623.51701 34 06.80803+30 22 58.8880023.528367+30.383024 0.400 0.40020.804 0.30020.143 0.30020.296 0.40019.713 0.5001991.76001991.7600 0.0 0.0 0.0 0.0 726.71301 34 06.77204+30 23 02.9671023.528217+30.384158 0.400 0.40021.161 0.30020.181 0.30020.390 0.40019.576 0.5001991.76001991.7600 0.0 0.0 0.0 0.0 828.49901 34 05.28145+30 23 07.5518023.522006+30.385431 0.163 0.16319.930 0.40019.747 0.30019.783 0.40019.561 0.5001970.86001970.8600 -56.9 7.8 36.9 7.8 %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"	URAT1	RAICRS deg	DEICRS deg	Epoch yr	f.mag mag	e_ mag	pmRA mas/yr	pmDE mas/yr	Jmag mag	Hmag mag	Kmag mag	Bmag mag	Vmag mag	gmag mag	rmag mag	imag mag
1	0.384	01 34 05.671178	+30 22 39.73024	602-012797	023.5238614	+30.3776700	2013.290	17.022	0.028	54.1	-8.9	13.931	13.301	12.980

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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	[****ClosingBrace(s)Inserted****]
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yr&%">\BegDIVclass='sort-down ' </A>decRmag
magBmag
mag

Nmag
mag

Vmag
mag

Jmag
mag

Hmag
mag

Kmag
mag

1 0.88301 34 05.688658+30 22 39.91580023.5237027 177.00+30.3777544 151.0064586+00112000 63.2 7.2 -15.4 6.1 542.777 17.923 20.854 15.525 18.705 13.931 13.301 12.980 219.33101 34 04.525537+30 22 28.74494023.5188564 205.00+30.3746514 112.0064586+00111234 -6.3 6.9 13.5 3.8 342.777 19.658 19.398   18.777       %0a%0a

Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	RA_ICRS deg	e_ mas	DE_ICRS deg	e_ mas	Source	Plx mas	pmRA mas/yr	pmDE mas/yr	RADEcor	Dup	<FG> e-/s	e_ e-/s	<Gmag> mag	Var
1	0.309	01 34 05.734271265	+30 22 39.57151220	023.5238927969	13.909	+30.3776587534	0.314	303359931027967360				0.626	0	2.3082e+03	6.4273e+00	17.117	NOT_AVAILABLE
2	19.604	01 34 04.518152301	+30 22 28.40412808	023.5188256346	65.399	+30.3745567022	20.155	303266094582875648				-0.980	1	1.8863e+02	3.6526e+00	19.836	NOT_AVAILABLE
3	27.806	01 34 05.290139954	+30 23 06.86646591	023.5220422498	21.489	+30.3852406850	11.660	303360004043642496				-0.150	0	1.3488e+02	2.5046e+00	20.200	NOT_AVAILABLE

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