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	0.068	09 36 20.30952	-64 39 52.8912	0225-06303365	144.084623	-64.664692			18.1	17.3	1980.234
2	9.465	09 36 19.61616	-64 40 01.3116	0225-06302954	144.081734	-64.667031			19.6	17.7	1980.234
3	9.730	09 36 18.86952	-64 39 55.9908	0225-06302484	144.078623	-64.665553			17.3	16.5	1980.234

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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	1.229	09 36 20.14872	-64 39 52.2972	S113313216261	144.083953	-64.664527	1998.406	18.15	0.41			3	2.58	0.33

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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	0.109	09 36 20.32680	-64 39 52.9416	0253-0135795	144.084695	-64.664706	131	102	1982.8	0	0	4		17.72	18.23	17.22	16.85
2	9.617	09 36 19.68888	-64 40 01.7112	0253-0135788	144.082037	-64.667142	36	408	1983.8	16	-18	3		19.29	19.90	19.05
3	9.990	09 36 18.82416	-64 39 55.9332	0253-0135783	144.078434	-64.665537	151	448	1982.8	-22	8	4		16.60	17.41	16.71	16.36

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	0.109	09 36 20.326656	-64 39 52.94016	0253-0136764	YM	144.0846944	-64.6647056	B	0.0	0.0	0.0	0.0	16.620	Y	16.700	Y	17.220	B	15.992	15.673	15.769
2	9.616	09 36 19.688664	-64 40 01.71012	0253-0136757	..	144.0820361	-64.6671417	B	16.0	2.0	-18.0	23.0	19.900	B			19.050	B
3	9.990	09 36 18.823992	-64 39 55.92996	0253-0136752	YM	144.0784333	-64.6655361	B	-22.0	8.0	8.0	24.0	17.280	Y	16.780	Y	16.710	B	15.698	15.329	14.977

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

%22d:m:s%22&%">\BegDIVclass='sort-down ' </A>stringGSC2.3

RAJ2000
deg

DEJ2000
degEpoch
yrFmag
magjmag
magVmag
magNmag
magClass

a
pixe

1 1.23209 36 20.14896-64 39 52.2900S4PQ016261144.083954-64.6645251998.40618.15  17.4417.183 2.58 0.33 2 9.57009 36 19.56432-64 40 01.2468S4PQ047339144.081518-64.6670131998.40618.96      3 1.46 0.12 %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	0.216	09 36 20.34360	-64 39 52.9704	144.084765	-64.664714	16.1	-10.3	15.992	15.770		18.23	17.72	17.22	16.85	5	0
2	9.546	09 36 19.64976	-64 40 01.5132	144.081874	-64.667087	12.3	-15.5				19.90	19.29	19.05		3	0
3	9.893	09 36 18.84936	-64 39 56.1168	144.078539	-64.665588	-6.4	-10.3	15.698	14.978		17.41	16.60	16.71	16.36	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 mas/yr	Fmag [****ClosingBrace(s)Inserted****]
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Fmag

%20

%22>%5cFONT SIZE=-1magBjmag
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

1 0.31909 36 20.35944-64 39 52.9956XPM 050-0168360144.084831-64.664721 18.67 -8.50 17.67 -7.89        15.992 0.08015.673 0.09015.770 0.286 74522171318.117.3 9119.78493700M 2 9.86709 36 18.85391-64 39 56.1242XPM 050-0168336144.078558-64.665590 -2.60 -9.95 -3.60 -9.35        15.698 0.07115.329 0.08214.978 0.129 74522172017.316.5 9119.78493700M %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"	SPMID	RAJ2000 deg	e_ mas	DEJ2000 deg	e_ mas	pmRA mas/yr	e_ (...)	pmDE mas/yr	e_ (...)	Epoch yr	N1	N2	Nc	Bmag mag	Vmag mag	Jmag mag	Hmag mag	Kmag mag	2M	igal	A
1	0.218	09 36 20.336760	-64 39 53.09424	960568737	144.0847365	44.7	-64.6647484	45.4	-9.24	2.83	12.37	3.11	2000.37	4	0	3	17.07	16.79	15.992	15.673	15.770	2M	0	A
2	9.936	09 36 18.847776	-64 39 56.22048	960568732	144.0785324	59.6	-64.6656168	60.8	-8.75	3.20	1.58	3.49	1996.84	4	0	4	19.76	17.32	15.698	15.329	14.978	2M	0	A

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