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	2.221	20 12 29.80488	-44 06 34.1820	0450-38675612	303.124187	-44.109495			18.3	17.9	1984.420
2	4.929	20 12 29.74800	-44 06 31.4712	0450-38675592	303.123950	-44.108742			15.8	16.3	1984.420

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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	4.742	20 12 29.77392	-44 06 31.5684	S332113326472	303.124058	-44.108769	1995.411	16.48	0.35	15.95	0.22	3	8.93	0.54

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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 1.73420 12 29.83536-44 06 34.55280458-0740061303.124314-44.1095983694391984.4 0 02  18.0317.97     2 3.19920 12 29.91888-44 06 32.86080458-0740064303.124662-44.1091289999991994.8 0 02      18.7717.61 3 4.52720 12 29.77800-44 06 31.78080458-0740060303.124075-44.1088282321241989.6 0 04  16.0515.3716.0617.55 4 6.13320 12 29.68080-44 06 30.47040458-0740059303.123670-44.1084645276091994.8 0 02      17.8517.86 %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	1.737	20 12 29.835336	-44 06 34.54992	0458-0825268	..	303.1243139	-44.1095972	B	0.0	0.0	0.0	0.0	17.970	B			18.030	e
2	3.200	20 12 29.918664	-44 06 32.86008	0458-0825271	..	303.1246611	-44.1091278	B	0.0	0.0	0.0	0.0					18.770	B
3	4.527	20 12 29.778000	-44 06 31.78008	0458-0825267	..	303.1240750	-44.1088278	B	0.0	0.0	0.0	0.0	15.370	B			16.060	B
4	6.134	20 12 29.680656	-44 06 30.47004	0458-0825266	..	303.1236694	-44.1084639	B	0.0	0.0	0.0	0.0					17.850	B

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

RAJ2000
deg

DEJ2000
deg

Epoch
yr

Fmag
mag

jmag
mag

Vmag
mag

Nmag
mag

Class

a
pix

e

1 4.74820 12 29.77416-44 06 31.5612SCBJ026472303.124059-44.1087671995.41116.4815.95  17.753 8.93 0.54 %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	4.614	20 12 29.74752	-44 06 31.8132	303.123948	-44.108837	-11.4	0.6				15.37	16.05	16.06	17.55	4	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_ mag	magGrvs mag	e_ [****ClosingBrace(s)Inserted****]
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e_

%20

%22>%5cFONT SIZE=-1magalphaEpoch
yr

deltaEpoch
yr

pmRA
mas/yr

e_
(...)

pmDE
mas/yr

e_
(...)

1 4.61420 12 29.74754-44 06 31.8128303.123948-44.108837 0.115 0.11515.951 0.30016.484 0.30016.308 0.40016.642 0.5001989.65001989.6500 -11.4 19.3 0.6 19.3 %0a%0a%0a

Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	GSC2	RA_ICRS deg	DE_ICRS deg	objID	Epoch yr	Class	Gmag mag	OMag mag	Bjmag mag	Fpgmag mag	Epgmag mag	Npgmag mag	Umag mag	Bmag mag	Vmag mag	umag mag	gmag mag	rmag mag	imag mag	zmag mag	ymag mag	Jmag mag	Hmag mag	Ksmag mag	Zmag mag	Ymag mag	W1mag mag	W2mag mag	W3mag mag	W4mag mag	FUVmag mag	NUVmag mag	a pix	e pix	PA pix
1	1.788	20 12 29.1659831115	-44 06 36.143544902	SCBJ094552	303.12522630000	-44.10974660000	2332113394552	2010.560	4																					16.804	16.891	12.015	8.406
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1	1.788	20 12 29.1659831115	-44 06 36.143544902	SCBJ094552	303.12522630000	-44.10974660000	2332113394552	2010.560	4																					16.804	16.891	12.015	8.406

%22>\Ahref='VizieR-5?-ref=VIZ663adf4d3efdcc&-out.add=.&-source=I/353/gsc242&-c=303.12562855600%20-44.10921671760,eq=ICRS,rs=2&-out.orig=o' class='full'2 3.84020 12 30.1508534400-44 06 33.180183360SCBJ058563303.12562855600-44.10921671760 23321133585632012.0003                               19.737                           3 4.74720 12 29.7831619284-44 06 31.706074861SCBJ026472303.12405395508-44.10876846313 23321133264721995.4103    15.95120016.484400  17.749600                   16.486   15.976    15.87615.82712.416 8.529     8.928 0.542 58.3 4 7.30820 12 29.6770426242-44 06 29.216568526SCBJ098294303.12365434427-44.10811571348 23321133982942006.0004                                                20.18920.129       %0a%0a%0a%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"	WISE	RAJ2000 deg	DEJ2000 deg	eeMaj arcsec	eeMin arcsec	Im	W1mag mag	e_ mag	W2mag mag	e_ mag	W3mag mag	e_ mag	W4mag mag	e_ mag	Jmag mag	Hmag mag	Kmag mag	ccf	ex	var	d2M arcsec	2M
1	4.923	20 12 29.78622	-44 06 31.3369	J201229.78-440631.3	303.124109	-44.108705	0.509	0.460	Im	16.031	0.080	16.540	0.382	12.724		8.775					0000	0	0nnn		2M

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%3cEM%3e%20%3cFONT%20COLOR=%27#CD5B45%27>_DEJ2000

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%22>%5cFONT SIZE=-1"d:m:s"AllWISE

RAJ2000
deg

DEJ2000
deg

Im

W1mag
mag

e_
mag

W2mag
mag

e_
mag

W3mag
mag

e_
mag

W4mag
mag

e_
mag

Jmag
mag

e_
mag

Hmag
mag

e_
mag

Kmag
mag

e_
mag

ccf

ex

var

pmRA
mas/yr

e_
(...)

pmDE
mas/yr

e_
(...)

qph

d2M
arcsec

2M

1 1.78720 12 30.054302-44 06 35.08767J201230.05-440635.0303.1252263-44.1097466Im16.804 0.11116.891 0.42212.015   8.406              00000nnnn 906 1430 100 1710BCUU  2M 2 4.80620 12 29.798498-44 06 31.42120J201229.79-440631.4303.1241604-44.1087281Im15.876 0.04915.827 0.14212.416   8.529              000000nnn 1056 494 -802 531ABUU  2M %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	Name	r.fov deg	b	FUVmag mag	e_ mag	NUVmag mag	e_ mag	Fafl	Nafl	Fexf	Nexf	Fr deg	Nr deg
1	7.308	20 12 29.67704	-44 06 29.2166	303.123654	-44.108116	GALEX J201229.6-440629	0.522597	3	20.1892	0.1903	20.1292	0.1201	0	1	0	0	0.005473	0.007508

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