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	2.227	19 01 21.26280	-62 28 04.1700	0225-29776676	285.338595	-62.467825			20.3	18.2	1981.393
2	20.987	19 01 23.94480	-62 27 59.8500	0225-29777330	285.349770	-62.466625			19.5	18.2	1981.393
3	27.195	19 01 17.53080	-62 27 50.2200	0225-29775797	285.323045	-62.463950			19.7	17.9	1981.393

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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	27.043	19 01 17.56368	-62 27 50.1228	S312111110612	285.323182	-62.463923	1989.658	18.19	0.44			3	2.50	0.11

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>	\BegDIVclass='sort-down ' </A>
dec 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	2.248	19 01 21.28200	-62 28 03.7416	0275-0943676	285.338675	-62.467706	81	106	1984.1	0	0	3		19.01	20.72	20.16
2	21.158	19 01 23.96136	-62 27 59.5224	0275-0943699	285.349839	-62.466534	60	116	1984.7	0	0	4		18.96	20.14	19.29	18.27
3	23.476	19 01 18.13800	-62 27 50.4432	0275-0943662	285.325575	-62.464012	999	999	1990.5	0	0	2				19.78	18.48
4	27.223	19 01 17.54952	-62 27 49.9320	0275-0943658	285.323123	-62.463870	64	65	1984.7	0	0	4		17.62	20.28	17.89	16.73

Note: The Naval Observatory Merged Astrometric Dataset (NOMAD) contains astrometric and photometric data for over 1 billion stars derived from the Hipparcos (I/239), Tycho-2 (I/259), UCAC2 (I/289), and USNO-B1.0 (I/284) catalogs for astrometry and optical photometry, supplemented by 2MASS (II/246) near-infrared photometry.
An efficient remote query program findnomad1 is available in the cdsclient package, for Unix/Linux platforms

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	2.248	19 01 21.282000	-62 28 03.74016	0275-1055624	..	285.3386750	-62.4677056	B	0.0	0.0	0.0	0.0	20.720	B			20.160	B
2	21.158	19 01 23.961336	-62 27 59.51988	0275-1055647	..	285.3498389	-62.4665333	B	0.0	0.0	0.0	0.0	20.140	B			19.290	B
3	23.478	19 01 18.138000	-62 27 50.43996	0275-1055610	..	285.3255750	-62.4640111	B	0.0	0.0	0.0	0.0					19.780	B
4	27.225	19 01 17.549328	-62 27 49.92984	0275-1055606	.M	285.3231222	-62.4638694	B	0.0	0.0	0.0	0.0	20.280	B			17.890	B	15.393	14.773	14.481

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

%22h:m:s%22&%">\BegDIVclass='sort-down ' </A>string _DEJ2000
"d:m:s"GSC2.3

RAJ2000
degDEJ2000
degEpoch
yrFmag
magjmag
magVmag
magNmag
magClass

a
pixe

1 2.40319 01 21.30168-62 28 03.8568SAQD010497285.338757-62.4677381989.65820.2521.11    3 1.76 0.34 218.46819 01 23.08320-62 27 52.2324SAQD027543285.346180-62.4645091995.65520.52      3 1.46 0.24 321.47019 01 24.00384-62 27 59.3964SAQD010541285.350016-62.4664991989.65819.7820.49  19.103 1.56 0.06 427.04419 01 17.56392-62 27 50.1192SAQD010612285.323183-62.4639221989.65818.1920.46  16.963 2.50 0.11 %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	2.360	19 01 21.28992	-62 28 04.0188	285.338708	-62.467783	1.2	-3.4				20.72	19.01	20.16		3	0
2	21.188	19 01 23.97120	-62 27 59.7276	285.349880	-62.466591	1.6	0.6				20.14	18.96	19.29	18.27	4	0
3	25.527	19 01 17.92344	-62 27 48.9816	285.324681	-62.463606	-105.1	115.2						19.78	18.48	2	0
4	26.833	19 01 17.55840	-62 27 50.6232	285.323160	-62.464062	-3.1	-28.9	15.393	14.482		20.28	17.62	17.89	16.73	5	0

%0a%0a

Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	ID	RAICRS deg	DEICRS deg	pmRAp mas/yr	pmDEp mas/yr	pmRAx mas/yr	pmDEx [****ClosingBrace(s)Inserted****]
">

pmDEx

%20

%22>%5cFONT SIZE=-1mas/yrFmag
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

126.83719 01 17.55861-62 27 50.6124XPM 055-1292932285.323161-62.464059 1.73 -29.68 0.72 -29.2918.18720.457  16.95515.393 0.04714.774 0.06414.482 0.078 99007057819.717.9 14119.01336900M %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	2.360	19 01 21.28996	-62 28 04.0191	285.338708	-62.467783	0.133	0.133	21.111	0.300	20.247	0.300	20.438	0.400	19.707	0.500	1984.1500	1984.1500	1.2	21.3	-3.4	21.3
2	21.188	19 01 23.97120	-62 27 59.7280	285.349880	-62.466591	0.115	0.115	20.492	0.300	19.778	0.300	19.941	0.400	19.320	0.500	1984.7200	1984.7200	1.6	21.0	0.6	21.0
3	26.834	19 01 17.55838	-62 27 50.6227	285.323160	-62.464062	0.071	0.071	20.457	0.300	18.187	0.300	18.302	0.400	16.690	0.500	1994.4800	1994.4800	-3.1	8.5	-28.9	8.5

%0a%0a