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	15.175	10 06 18.56808	-38 20 28.7520	0450-10744642	151.577367	-38.341320			20.8	17.4	1981.077
2	17.145	10 06 17.68944	-38 19 58.8828	0450-10744198	151.573706	-38.333023			16.4	16.2	1981.077
3	29.874	10 06 16.97352	-38 20 38.1624	0450-10743825	151.570723	-38.343934			19.9	17.5	1981.077

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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	16.769	10 06 17.66736	-38 19 59.4804	S13011123134	151.573614	-38.333189	1992.030	15.71	0.00	16.98	0.35	0	3.41	0.01

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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	15.545	10 06 18.56952	-38 20 29.1228	0516-0221108	151.577373	-38.341423	154	110	1985.1	0	0	3		18.05	21.88	19.56
2	16.994	10 06 17.67600	-38 19 59.1528	0516-0221102	151.573650	-38.333098	72	112	1987.1	0	0	4		14.81	17.67	16.08	16.01
3	19.125	10 06 16.80336	-38 20 14.5428	0516-0221099	151.570014	-38.337373	301	180	1985.1	0	0	2			20.30		18.52
4	19.889	10 06 16.74000	-38 20 14.9028	0516-0221098	151.569750	-38.337473	142	247	1986.1	0	0	3			21.95	19.72	18.79

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	15.542	10 06 18.569328	-38 20 29.11992	0516-0226112	..	151.5773722	-38.3414222	B	0.0	0.0	0.0	0.0	21.880	B			19.560	B
2	16.997	10 06 17.676000	-38 19 59.14992	0516-0226106	YM	151.5736500	-38.3330972	B	0.0	0.0	0.0	0.0	16.430	Y	16.500	Y	16.080	B	15.239	15.012	15.221
3	19.126	10 06 16.803336	-38 20 14.53992	0516-0226103	..	151.5700139	-38.3373722	B	0.0	0.0	0.0	0.0	20.300	B
4	19.889	10 06 16.740000	-38 20 14.89992	0516-0226102	..	151.5697500	-38.3374722	B	0.0	0.0	0.0	0.0	21.950	B			19.720	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

%22>%5cFONT SIZE=-1"h:m:s" _DEJ2000
"d:m:s"GSC2.3

RAJ2000
degDEJ2000
degEpoch
yrFmag
magjmag
magVmag
magNmag
magClass

a
pixe

115.75510 06 18.52800-38 20 29.3784S5LI002879151.577200-38.3414941992.03021.3421.27    3 2.05 0.22 216.77110 06 17.66760-38 19 59.4768S5LI003134151.573615-38.3331881992.03015.7116.98  15.890 3.41 0.01 320.00510 06 16.72944-38 20 14.7624S5LI002982151.569706-38.3374341992.03021.9421.75  18.543 1.71 0.10 428.52910 06 18.82944-38 20 41.8020S5LI036066151.578456-38.3449451977.048  20.76    3 2.30 0.03 %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	15.422	10 06 18.54720	-38 20 29.0256	151.577280	-38.341396	-16.0	8.8				21.88	18.05	19.56		3	0
2	17.159	10 06 17.67480	-38 19 58.9692	151.573645	-38.333047	-6.8	11.8	15.239	15.221		17.67	14.81	16.08	16.01	5	0
3	19.569	10 06 16.76616	-38 20 14.6688	151.569859	-38.337408	-24.4	-10.3				20.30			18.52	2	0
4	19.910	10 06 16.73664	-38 20 14.5572	151.569736	-38.337377	-1.4	21.7				21.95		19.72	18.79	3	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****]
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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

117.21010 06 17.67288-38 19 58.9225XPM 103-0421596151.573637-38.333034 -7.11 -1.76 -8.50 -1.7915.70716.980  15.89315.239 0.04515.012 0.08715.221 0.177 33399815816.416.2 31618.15365000M %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	17.117	10 06 17.676576	-38 19 59.00556	3480492582	151.5736524	47.0	-38.3330571	45.0	-1.01	1.72	2.37	1.58	1982.73	4	0	2	16.52	16.37	15.239	15.012	15.221	2M	0	A

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