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	3.440	04 55 18.17400	-11 40 39.3420	0750-01149876	073.825725	-11.677595			17.0	16.3	1953.866
2	4.174	04 55 18.20088	-11 40 37.3008	0750-01149879	073.825837	-11.677028			18.9	18.7	1953.866

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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	3.317	04 55 18.16584	-11 40 39.3060	S02322212026	073.825691	-11.677585	1993.803	16.39	0.44	15.89	0.42	3	5.01	0.15

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Full	[****ClosingBrace(s)Inserted****]
">

%22> ">\BegDIVclass='sort-down ' </A>dec _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 3.20004 55 18.15600-11 40 39.51120783-0073712073.825650-11.677642156 961974.4 0 0517.4916.1316.7615.6816.06 2 4.00504 55 18.19200-11 40 37.42320783-0073713073.825800-11.6770624111201953.8 0 0219.7518.75       3 5.61304 55 18.31872-11 40 39.84240783-0073714073.826328-11.6777349993191953.8 0 0219.2919.58       %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	3.200	04 55 18.156000	-11 40 39.51012	0783-0074077	YM	073.8256500	-11.6776417	B	0.0	0.0	0.0	0.0	16.760	B	16.810	Y	15.680	B	16.699	16.057	15.298
2	4.007	04 55 18.192000	-11 40 37.41996	0783-0074078	..	073.8258000	-11.6770611	B	0.0	0.0	0.0	0.0	19.750	o			18.750	e
3	5.611	04 55 18.318672	-11 40 39.83988	0783-0074079	..	073.8263278	-11.6777333	B	0.0	0.0	0.0	0.0	19.290	o			19.580	e

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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
deg

Epoch
yr

Fmag
mag

jmag
mag

Vmag
mag

Nmag
mag

Class

a
pix

e

1 3.32004 55 18.16608-11 40 39.2988S2AX002026073.825692-11.6775831993.80316.3915.89  16.633 5.01 0.15 %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	3.214	04 55 18.15720	-11 40 39.4896	073.825655	-11.677636	-0.5	-3.8	16.700	15.299	17.49	16.76	16.13		16.06	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 mag	Bjmag mag	Vmag mag	Nmag mag	Jmag mag	[****ClosingBrace(s)Inserted****]
">

mag&%">\BegDIVclass='sort-down ' </A>dece_
magHmag
mag

e_
mag

Kmag
mag

e_
mag

2Mkey

Bmag
mag

Rmag
mag

Fld

dT
yr

fg

fs

M

1 3.23704 55 18.15937-11 40 39.4322XPM 156-0044265073.825664-11.677620 -4.13 -2.34 -4.63 -2.1516.38815.885  16.62516.700 0.14216.058 0.17915.299 0.191 10668875617.016.3 71744.91339500M %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	3.214	04 55 18.15720	-11 40 39.4901	073.825655	-11.677636	0.090	0.090	15.885	0.300	16.388	0.300	16.221	0.400	16.531	0.500	1980.8500	1980.8500	-0.5	4.8	-3.8	4.8

%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"	RA_ICRS deg	DE_ICRS deg	rmag mag	pmRA mas/yr	e_ (...)	pmxRA [****ClosingBrace(s)Inserted****]
">

pmxRA

%20

%22>%5cFONT SIZE=-1mas/yre_
(...)

Chi2RA

pmGRA
mas/yr

pmDE
mas/yr

e_
(...)

pmxDE
mas/yr

e_
(...)

Chi2DE

pmGDE
mas/yr

Nobs

Flag

PS1

Gaia

DR9+DR12

Sloan

2M

1 3.43404 55 18.1713391083-11 40 39.579314801073.82571446092-11.6776590516819.181173 0.193 4.548 4.919 5.162 2.57683e-01   0.673 4.064 -1.530 4.544 1.38182e-01   7 5PS1Gaia DR9+DR12Sloan2M %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	3.504	04 55 18.1833601300	-11 40 39.544802854	S2AX002026	073.82573233000	-11.67767205000	202322212026	2013.729	3		18.064800	15.885400	16.388800		16.625000					19.750	19.189	18.843	18.722	18.2468	16.700	16.058	15.299			14.480	14.232	10.917	8.904	21.180	20.341	5.009	0.153	173.0
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1	3.504	04 55 18.1833601300	-11 40 39.544802854	S2AX002026	073.82573233000	-11.67767205000	202322212026	2013.729	3		18.064800	15.885400	16.388800		16.625000					19.750	19.189	18.843	18.722	18.2468	16.700	16.058	15.299			14.480	14.232	10.917	8.904	21.180	20.341	5.009	0.153	173.0

%22>\EndTABLESORT