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	9.171	08 02 52.76688	-30 18 35.5212	0525-07140099	120.719862	-30.309867			20.0	17.9	1980.682

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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	0.290	08 02 52.04784	-30 18 37.1952	S133001095761	120.716866	-30.310332	1998.323	13.19	1.09	16.29	1.09	3	3.35	0.07
2	6.065	08 02 52.31976	-30 18 42.2784	S133001095760	120.717999	-30.311744	1998.323	15.00	1.09	16.46	1.09	3	3.01	0.24

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">  _r
arcsec _RAJ2000
"h:m:s" _DEJ2000
"d:m:s"USNO-B1.0

RAJ2000
degDEJ2000
dege_RAJ2000
mase_DEJ2000
masEpoch
yrpmRA
mas/yrpmDE
mas/yrNdet

B1mag
magR1mag
magB2mag
magR2mag
magImag
mag 1 2.58308 02 52.20408-30 18 39.06000596-0155819120.717517-30.3108504175331970.4 0 0415.0612.8814.7112.84   2 7.63308 02 52.65288-30 18 36.02160596-0155829120.719387-30.3100069999991982.8 0 03    20.7918.4715.02 %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	0.296	08 02 52.051344	-30 18 37.32012	0596-0161101	YM	120.7168806	-30.3103667	Y	-12.7	9.0	13.8	9.0	15.440	Y	14.220	Y			8.515	7.189	6.679
2	2.582	08 02 52.204008	-30 18 39.06000	0596-0161106	..	120.7175167	-30.3108500	B	0.0	0.0	0.0	0.0	14.710	B			12.840	B
3	6.316	08 02 52.322664	-30 18 42.54984	0596-0161110	YM	120.7180111	-30.3118194	Y	4.6	9.0	-18.7	9.0	15.340	Y	14.950	Y			13.964	10.949	10.119
4	7.630	08 02 52.652664	-30 18 36.02016	0596-0161119	..	120.7193861	-30.3100056	B	0.0	0.0	0.0	0.0	20.790	B			18.470	B

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

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%22>%5cFONT SIZE=-1"h:m:s" _DEJ2000
"d:m:s"

GSC2.3

RAJ2000
deg

DEJ2000
deg

Epoch
yr

Fmag
mag

jmag
mag

Vmag
mag

Nmag
mag

Class

a
pix

e

1 0.28908 02 52.04784-30 18 37.1916S64K095761120.716866-30.3103311998.32313.1916.2914.3210.543 3.35 0.07 2 6.06108 02 52.32000-30 18 42.2712S64K095760120.718000-30.3117421998.32315.0016.4615.51  3 3.01 0.24 3 9.21308 02 52.76760-30 18 35.3448S64K095708120.719865-30.3098181977.212  21.22    3 1.85 0.22 %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	2.203	08 02 52.17504	-30 18 38.8800	120.717396	-30.310800	5.7	-4.6			15.06	14.71	12.88	12.84		4	1
2	8.132	08 02 52.67736	-30 18 35.0856	120.719489	-30.309746	93.9	32.6				20.79		18.47	15.02	3	1

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Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	SPMID	RAJ2000 deg	e_ mas	DEJ2000 deg	e_ mas	pmRA mas/yr	e_ (...)	pmDE mas/yr	e_ (...)	Epoch yr	[****ClosingBrace(s)Inserted****]
">

yr&%">\BegDIVclass='sort-down ' </A>decN1

N2

Nc

Bmag
mag

Vmag
mag

Jmag
mag

Hmag
mag

Kmag
mag

2M

igal

A

1 0.34608 02 52.076016-30 18 37.485724790796132120.7169834 87.8-30.3104127 82.4 2.68 6.83 -0.61 6.241982.17 2 2 017.9716.60 8.515 7.189 6.6802M0A 2 6.38308 02 52.339344-30 18 42.492964790796137120.7180806115.3-30.3118036108.0 -0.01 5.79 -1.02 5.161973.25 2 2 0 8.8315.0513.96510.95010.1202M0A %0a%0a%3cP%3e%0a%3cFONT%20SIZE=%27-1%27%3e%3cEM%3e%3cFONT%20COLOR=%27#0000FF%27>%3cB%3eNote:%20%0a%25%25%25%20Introduction%20to%20UCAC4%20VizieR%20page%0a%3cEM%3e%25Note:%20%0a%20%20see%20the%20UCAC4%20document,%20and%20the%0a%20%20the%20fix%20for%20high%20proper%20motion%20stars.%0a%20%20The%20UCAC%20home%20page%20is%20available%20at%0a%20%20http://www.usno.navy.mil/USNO/astrometry/optical-IR-prod/ucac.%0a%20%20%3cBR%3ePlease%20%3cB%3eacknowledge%20the%20usage%0a%20%20of%20the%20UCAC4%0a%0a%25%3cP%3e%0a

Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	UCAC4	RAJ2000 deg	DEJ2000 deg	ePos mas	f.mag mag	of	db	pmRA mas/yr	pmDE mas/yr	Jmag mag	Kmag mag	Bmag mag	Vmag mag	rmag mag	imag mag	H	A	b	h	Z	B	L	N	S
1	0.084	08 02 52.066392	-30 18 37.21932	299-034976	120.7169433	-30.3103387	26	14.101	0	34	-1.5	6.1	8.515	6.680	15.900	14.286	13.319	11.747	0	0	0	0	0	0	0	0	4
2	6.488	08 02 52.340280	-30 18 42.61032	299-034978	120.7180845	-30.3118362	155	15.755	0	0	2.8	-7.4	13.965	10.120					0	0	0	0	0	0	0	7	3

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

%20

%22>%5cFONT SIZE=-1degDEJ2000
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 0.08408 02 52.06638-30 18 37.2190120.716943-30.310339 0.018 0.01816.288 0.30013.186 0.30012.842 0.40010.882 0.5001983.89001983.8900 -1.5 3.8 6.1 3.8 2 6.48708 02 52.34024-30 18 42.6100120.718084-30.311836 0.075 0.10916.462 0.30015.004 0.30015.246 0.40014.108 0.5001983.89001983.8900 2.8 5.2 -7.4 8.2 3 8.13208 02 52.67733-30 18 35.0861120.719489-30.309746 0.163 0.13321.223 0.30018.470 0.40018.365 0.40016.532 0.5001982.81001982.8100 93.9 21.3 32.6 20.2 %0a%0a%3cP%3e%0a%3cFONT%20SIZE=%27-1%27%3e%3cEM%3e%3cFONT%20COLOR=%27#0000FF%27>%3cB%3eNote:%20Zone%20-40/%2b50deg%3cP%3e%0a

Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	CMC15	RA_ICRS deg	DE_ICRS deg	r'mag mag	pflag	Nt	Jmag mag	Hmag mag	Ksmag mag
1	0.157	08 02 52.06392	-30 18 37.2851	080252.0-301837	120.716933	-30.310357	13.626		2	8.515	7.189	6.680
2	6.475	08 02 52.33629	-30 18 42.6276	080252.3-301842	120.718068	-30.311841	15.018		2	13.965

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