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	1.305	18 09 16.15416	-76 18 44.6832	0075-06030445	272.317309	-76.312412			19.7	18.2	1980.411
2	6.743	18 09 15.68016	-76 18 38.7720	0075-06030397	272.315334	-76.310770			19.6	18.1	1980.411

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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	4.392	18 09 15.93480	-76 18 40.9500	S31021318125	272.316395	-76.311375	1976.254			19.36	0.37	3	3.88	0.64

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

RAJ2000
degDEJ2000
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masEpoch
yrpmRA
mas/yrpmDE
mas/yrNdet

B1mag
magR1mag
magB2mag
magR2mag
magImag
mag 1 2.00018 09 16.03152-76 18 43.82280136-0154542272.316798-76.3121734638541988.0 0 02  19.18  19.20   2 3.11418 09 15.65616-76 18 44.27280136-0154540272.315234-76.312298458 531984.1 -68 23  19.5719.8819.78   3 7.13118 09 15.41136-76 18 38.87280136-0154538272.314214-76.310798 471461984.1 -48 -143  19.0219.7019.61   %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	2.002	18 09 16.031328	-76 18 43.81992	0136-0156786	..	272.3167972	-76.3121722	B	0.0	0.0	0.0	0.0					19.200	B
2	3.115	18 09 15.655992	-76 18 44.26992	0136-0156784	..	272.3152333	-76.3122972	B	-68.0	26.0	2.0	3.0	19.880	B			19.780	B
3	7.134	18 09 15.411336	-76 18 38.86992	0136-0156782	..	272.3142139	-76.3107972	B	-48.0	2.0	-14.0	8.0	19.700	B			19.610	B

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Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	GSC2.3 [****ClosingBrace(s)Inserted****]
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GSC2.3

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%22>RAJ2000
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DEJ2000
deg

Epoch
yr

Fmag
mag

jmag
mag

Vmag
mag

Nmag
mag

Class

a
pix

e

1 2.84918 09 15.75336-76 18 43.9740SAE5016518272.315639-76.3122151991.58620.0021.80    3 2.02 0.40 2 7.40218 09 15.52680-76 18 38.3112SAE5008125272.314695-76.3106421991.58619.4019.36    3 1.72 0.15 %0a%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	3.060	18 09 15.66336	-76 18 44.4744	272.315264	-76.312354	-76.3	-6.7				19.88	19.57	19.78		3	0
2	6.935	18 09 15.43776	-76 18 39.0456	272.314324	-76.310846	-55.5	-22.4				19.70	19.02	19.61		3	0

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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_ [****ClosingBrace(s)Inserted****]
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e_

%20

%22>%5cFONT SIZE=-1magmagGrvs
mag

e_
mag

alphaEpoch
yr

deltaEpoch
yr

pmRA
mas/yr

e_
(...)

pmDE
mas/yr

e_
(...)

1 3.06018 09 15.66336-76 18 44.4739272.315264-76.312354 0.133 0.13321.798 0.30019.999 0.30020.220 0.40018.869 0.5001984.16001984.1600 -76.3 21.2 -6.7 21.2 2 6.93518 09 15.43774-76 18 39.0459272.314324-76.310846 0.133 0.13319.358 0.30019.399 0.30019.371 0.40019.321 0.5001984.13001984.1300 -55.5 21.2 -22.4 21.2 %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	7.201	18 09 15.542987035	-76 18 38.50905972	272.3147624460	0.651	-76.3106969610	0.803	6414268949153028992				0.071	0	2.2732e+02	1.4773e+00	19.633	NOT_AVAILABLE

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Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	RA_ICRS deg	e_ mas	DE_ICRS deg	e_ mas	Source	Plx mas	e_ mas	pmRA mas/yr	e_ (...)	pmDE mas/yr	[****ClosingBrace(s)Inserted****]
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mas/yr&%">\BegDIVclass='sort-down ' </A>dece_
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FG
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Gmag
mag

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mag

FBP
e-/s

e_
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mag

e_
mag

FRP
e-/s

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RPmag
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e_
mag

BP-RP
mag

RV
km/s

e_
km/s

Teff
K

AG
mag

E(BP-RP)
mag

Rad
solRad

Lum
solLum

1 7.20418 09 15.5652817874-76 18 38.538338076272.31475952789 0.3161-76.31069647235 0.40006414268949153028992 0.2453 0.4619 -5.266 0.552 2.002 0.8110 2.3022e+02 9.7698e-0119.78300.0046 1.2150e+02 5.9314e+0020.13990.0530 1.9360e+02 5.2928e+0019.04460.0297 1.0953               2 9.06818 09 15.0344142735-76 18 52.197646151272.31264339281 2.3879-76.31449934615 3.95326414268953448699136            0 5.8263e+01 1.6734e+0021.27490.0312                                 %0a%0a

Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	Source	RA_ICRS deg	DE_ICRS deg	rest pc	b_ pc	B_ pc	rlen pc	ResFlag	ModFlag
1	7.204	18 09 15.5422866938	-76 18 38.507300451	6414268949153028992	272.31475952789	-76.31069647235	2321.869891384450057	1341.389922486439900	4080.711624337629928	1002.65209941305	1	1

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