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	17.008	03 56 56.51352	-17 55 13.4832	0675-01369281	059.235473	-17.920412			20.9	17.9	1981.929
2	29.069	03 56 57.46488	-17 55 16.9320	0675-01369365	059.239437	-17.921370			20.0	18.1	1981.929

%0a%0a%3cP%3e%0a%3cFONT%20SIZE=%27-1%27%3e%3cEM%3e%3cFONT%20COLOR=%27#0000FF%27>%3cB%3eNote:%20The%20%3cB%3eUSNO-B%20Catalog%20presents%20positions,%20proper%20motions,%20%0amagnitudes%20un%20blue,%20red%20and%20infrared,%20as%20well%20as%20star/galaxy%20estimators%0afor%201,045,175,762%20objects%20derived%20from%203,648,832,040%20separate%20observations.%0aThe%20data%20were%20taken%20from%20scans%20of%207,435%20Schmidt%20plates%0ataken%20from%20various%20sky%20surveys%20during%20the%20last%2050%20years.%3cBR%3e%0aUSNO-B1.0%20catalog%20was%20created%20by%20Dave%20Monet%20and%20collaborators%0aat%20http://www.nofs.navy.mil/data/fchpix/%20%3cBR%3e%0a%3cB%3e%3cFONT%20COLOR=%27#EE0000%27>%20Note%20that%20the%20star/galaxy%20estimators%20may%20be%20mixed%20up%0a%20in%20dense%20regions.%0a%3cP%3e%0a

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	1.432	03 56 55.54200	-17 55 21.7020	0720-0044126	059.231425	-17.922695	180	259	1966.9	0	0	2	20.41		21.63
2	17.382	03 56 56.54136	-17 55 13.4400	0720-0044128	059.235589	-17.920400	442	129	1984.3	0	0	2			21.30	18.45
[****ClosingBrace(s)Inserted****]
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%3cEM%3e2&%3cFONT%20COLOR=%27#CD5B45%27>17.382&%3cFONT%20COLOR=%27#CD5B45%27>03%2056%2056.54136&%3cFONT%20COLOR=%27#CD5B45%27>-17%2055%2013.4400&0720-0044128&059.235589&-17.920400&442&129&1984.3&%20%20%20%20%200&%20%20%20%20%200&2&%20&%20&21.30&18.45&%20%3cBR%3e">\Ahref='VizieR-5?-ref=VIZ66365cee36bb&-out.add=.&-source=I/284/out&USNO-B1.0===0720-0044131&-out.orig=o' class='full'328.96803 56 57.45072-17 55 16.30200720-0044131059.239378-17.9211952861721974.9 -8 16520.6419.0320.9919.2117.55 %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	1.431	03 56 55.542000	-17 55 21.69984	0720-0044662	..	059.2314250	-17.9226944	B	0.0	0.0	0.0	0.0	21.630	B
2	17.382	03 56 56.541336	-17 55 13.44000	0720-0044664	..	059.2355889	-17.9204000	B	0.0	0.0	0.0	0.0	21.300	B			18.450	B
3	28.968	03 56 57.450672	-17 55 16.29984	0720-0044667	.M	059.2393778	-17.9211944	B	-8.0	9.0	16.0	5.0	20.990	B			19.210	B	16.036	15.314	15.112

%0a%0a%3cP%3e%0a%3cFONT%20SIZE=%27-1%27%3e%3cEM%3e%3cFONT%20COLOR=%27#0000FF%27>%3cB%3eNote:%20This%20version%20of%20the%20%0a%3cB%3eGSC-II%0ahas%20no%20proper%20motions,%20but%20the%20limits%20on%20brightness%20which%20existed%20on%0a%20%28F<18.5,%20B_j<19.5%29%20were%20removed.%0a%25The%20data%20are%20%3cB%3e%3cFONT%20COLOR=%27#0000CD%27>copyrighted,%20check%0a%25the%20%3cB%3edata%20use%20Policy.%0a%3cP%3e%0a

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

%22>RAJ2000
degDEJ2000
degEpoch
yrFmag
magjmag
magVmag
magNmag
magClass

a
pixe

1 1.44603 56 55.53024-17 55 22.0188S1V8000931059.231376-17.9227831983.768  21.66    3 1.40 0.05 228.88803 56 57.44688-17 55 16.4568S1V8000945059.239362-17.9212381991.90718.6420.83  17.230 2.71 0.09 %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	1.913	03 56 55.57176	-17 55 21.9324	059.231549	-17.922759	13.9	-10.3			20.41	21.63				2	0
2	29.138	03 56 57.46464	-17 55 16.4604	059.239436	-17.921239	2.4	8.6	16.036	15.112	20.64	20.99	19.03	19.21	17.55	6	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	[****ClosingBrace(s)Inserted****]
">

mag&%">\BegDIVclass='sort-down ' </A>decNmag
magJmag
mage_
magHmag
mage_
magKmag
mage_
mag2Mkey

Bmag
magRmag
magFld

dT
yrfg

fs

M

129.08603 56 57.46101-17 55 16.4678XPM 144-0036606059.239421-17.921241 6.53 18.68 5.55 19.0018.63720.833  17.23116.036 0.07015.315 0.09115.112 0.151130839551020.018.1 54916.95122700M %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	29.138	03 56 57.46468	-17 55 16.4600	059.239436	-17.921239	0.077	0.077	20.833	0.300	18.637	0.300	18.775	0.400	17.202	0.500	1985.4100	1985.4100	2.4	4.6	8.6	4.6

%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"	RAICRS deg	e_ mas	DEICRS deg	e_ mas	ID	Type	pmRA mas/yr	e_ (...)	pmDE [****ClosingBrace(s)Inserted****]
">

pmDE

%20

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

Nobs

Dt
yr

Rmag
mag

Bmag
mag

Nmag
mag

Vmag
mag

Jmag
mag

Hmag
mag

Kmag
mag

128.26203 56 57.402420-17 55 16.45789059.2391768 51.00-17.9212383 75.0035188+00009450 4.4 2.4 3.8 3.6 737.938 18.637 20.833 17.231   16.036 15.315 15.112 %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	1.915	03 56 55.577838491	-17 55 21.70903286	059.2315743270	21.346	-17.9226969536	13.075	5095693102855028736				-0.988	0	6.8015e+01	5.4135e+00	20.943	NOT_AVAILABLE
2	29.231	03 56 57.469870828	-17 55 16.34325651	059.2394577951	0.508	-17.9212064601	0.418	5095693098558774016				-0.816	0	6.7807e+02	3.0941e+00	18.447	NOT_AVAILABLE

%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	ipix	comp	pmRA mas/yr	pmDE mas/yr	Jmag mag	Hmag mag	Kmag [****ClosingBrace(s)Inserted****]
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Kmag

%20

%22>%5cFONT SIZE=-1magB1mag
mag

B2mag
mag

R1mag
mag

R2mag
mag

Imag
mag

GaiaId

Gmag
mag

Clone

Nosc

1 1.73803 56 55.565750856-17 55 21.66631932059.2315239619-17.92268508872475571477105637268   11.508 -2.856      20.4121.63      509569310285502873620.943     229.16103 56 57.466344144-17 55 16.46765652059.2394431006-17.92124101572475571529757035815   3.356 8.29316.03615.31515.11220.6420.9919.0319.2117.55509569309855877401618.447     %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	e_ mas	pmRA mas/yr	e_ (...)	pmDE mas/yr	e_ (...)	Dup	FG e-/s	e_ e-/s	Gmag mag	e_ mag	FBP e-/s	e_ e-/s	BPmag mag	e_ mag	FRP e-/s	e_ e-/s	RPmag mag	e_ mag	BP-RP mag	RV km/s	e_ km/s	Teff K	AG mag	E(BP-RP) mag	Rad solRad	[****ClosingBrace(s)Inserted****]
solRad
">
	\BegDIVclass='sort-down '
</A>
decLum solLum
1	1.920	03 56 55.5781806813	-17 55 21.708036932	059.23157575284	2.8639	-17.92269667693	1.9887	5095693102856007680							1	7.5893e+01	2.2582e+00	20.9879	0.0323	6.6507e+01	9.1152e+00	20.7942	0.1488	5.1223e+01	1.2834e+01	20.4883	0.2720	0.3060
2	29.234	03 56 57.4627812220	-17 55 16.476230438	059.23945867053	0.1957	-17.92120505480	0.1517	5095693102855908480	1.1688	0.2633	6.721	0.336	8.905	0.270	0	6.6844e+02	1.3685e+00	18.6257	0.0022	1.5591e+02	6.4555e+00	19.8692	0.0450	7.8831e+02	9.3516e+00	17.5202	0.0129	2.3490

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