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	8.732	16 09 42.36336	-04 23 16.4400	0825-09146737	242.426514	-04.387900			14.7	13.6	1953.521
2	29.612	16 09 40.98480	-04 23 21.1920	0825-09146440	242.420770	-04.389220			17.8	17.3	1953.521

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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	8.941	16 09 42.34776	-04 23 17.0952	S22123313930	242.426449	-04.388082	1986.447	13.00	0.41	14.23	0.41	3	8.98	0.26

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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 8.20416 09 42.48888-04 23 21.63120856-0280752242.427037-04.3893422709991971.4 0 0416.9117.97  17.5617.99 2 9.00116 09 42.34416-04 23 16.77120856-0280751242.426434-04.387992122 371974.0 0 0514.2412.8512.9412.1414.56 312.03516 09 42.14208-04 23 16.43280856-0280750242.425592-04.3878989999991969.4 0 0417.0816.6820.5818.62   414.80016 09 42.01872-04 23 22.27200856-0280745242.425078-04.3895202479991974.7 -42 123  19.2120.9518.89   %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	8.206	16 09 42.488664	-04 23 21.63012	0856-0285888	..	242.4270361	-04.3893417	B	0.0	0.0	0.0	0.0	16.910	o			17.560	B
2	9.003	16 09 42.343992	-04 23 16.77012	0856-0285887	YM	242.4264333	-04.3879917	B	0.0	0.0	0.0	0.0	12.940	B	17.800	Y	12.140	B	15.439	14.901	14.484
3	12.037	16 09 42.142008	-04 23 16.42992	0856-0285886	..	242.4255917	-04.3878972	B	0.0	0.0	0.0	0.0	20.580	B			18.620	B
4	14.800	16 09 42.018672	-04 23 22.26984	0856-0285881	..	242.4250778	-04.3895194	B	-42.0	8.0	12.0	86.0	20.950	B			18.890	B

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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 8.93816 09 42.34800-04 23 17.0880S88T003930242.426450-04.3880801986.44713.0014.23  15.093 8.98 0.26 221.27216 09 41.69400-04 23 27.1932S88T003921242.423725-04.3908871986.44720.64      3 1.24 0.02 %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	8.330	16 09 42.49032	-04 23 21.8868	242.427043	-04.389413	3.7	-29.3			16.91		17.97		17.99	3	1
2	8.845	16 09 42.35424	-04 23 17.1456	242.426476	-04.388096	1.4	-8.4	15.440	14.485	14.24	12.94	12.85		14.56	5	0
3	15.111	16 09 42.00096	-04 23 22.4484	242.425004	-04.389569	-52.1	8.0				20.95	19.21			2	0
4	16.046	16 09 41.87280	-04 23 17.2896	242.424470	-04.388136	-91.1	-47.7			17.08	20.58	16.68			3	1
5	29.973	16 09 40.96152	-04 23 21.3144	242.420673	-04.389254	-2.4	2.9	16.263	15.406	17.79	18.57	17.06		17.06	5	0

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

deg&%">\BegDIVclass='sort-down ' </A>decpmRAp
mas/yrpmDEp
mas/yr

pmRAx
mas/yr

pmDEx
mas/yr

Fmag
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

129.93216 09 40.96367-04 23 21.2461XPM 171-0405546242.420682-04.389235 -3.73 2.63 -4.06 2.6117.40618.315  16.88516.263 0.13216.045 0.20915.406   29780887717.817.3 68545.65581500M %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	8.330	16 09 42.49037	-04 23 21.8872	242.427043	-04.389413	0.133	0.163	16.910	0.400	17.970	0.400	17.643	0.400	18.385	0.500	1966.5100	1966.5100	3.7	7.2	-29.3	7.9
2	8.845	16 09 42.35424	-04 23 17.1459	242.426476	-04.388096	0.071	0.071	14.230	0.300	12.999	0.300	13.233	0.400	12.246	0.500	1988.5300	1988.5300	1.4	4.0	-8.4	4.0
3	15.111	16 09 42.00096	-04 23 22.4481	242.425004	-04.389569	0.163	0.163	20.950	0.400	19.210	0.400	19.438	0.400	18.123	0.500	1968.9600	1968.9600	-52.1	10.5	8.0	10.5
4	16.046	16 09 41.87279	-04 23 17.2901	242.424470	-04.388136	0.133	0.163	20.580	0.400	16.680	0.400	15.488	0.400	13.363	0.500	1963.8100	1963.8100	-91.1	9.1	-47.7	10.0
5	29.973	16 09 40.96155	-04 23 21.3139	242.420673	-04.389254	0.094	0.094	18.315	0.300	17.406	0.300	17.604	0.400	16.841	0.500	1980.4700	1980.4700	-2.4	4.8	2.9	4.8

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Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	URAT1 [****ClosingBrace(s)Inserted****]
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URAT1

%20

%22>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 8.68216 09 42.356156-04 23 17.16340429-151944242.4265214-04.38805422013.57316.508 0.016 9.9 12.415.44014.90214.485    17.20916.439   %0a%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	16.338	16 09 41.853695156	-04 23 17.58571583	242.4243903965	10.251	-04.3882182544	4.683	4356518884639356544				-0.906	0	9.8570e+01	1.9173e+00	20.540	NOT_AVAILABLE
2	22.342	16 09 42.363010272	-04 23 37.66088021	242.4265125428	24.485	-04.3937946889	7.242	4356518888933324288				-0.838	0	5.8407e+01	1.3410e+00	21.109	NOT_AVAILABLE

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