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	2.740	02 13 58.43688	+20 04 19.5420	1050-00615369	033.493487	+20.072095			19.1	17.5	1954.679

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Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	APM-ID	RAJ2000 deg	DEJ2000 deg	rmag mag	l_	rClass	rStel	rDiam arcsec	rEll	bmag mag	l_	bClass	bStel	bDiam arcsec	b-r mag	Mflag
1	2.958	02 13 58.41888	+20 04 19.5924	EO1202-0050174	033.493412	+20.072109	17.63		1	2.79	7.3	0.05	20.21		-1	2.07	5.7	2.58
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%3cEM%3e1&%3cFONT%20COLOR=%27#CD5B45%27>%202.958&%3cFONT%20COLOR=%27#CD5B45%27>02%2013%2058.41888&%3cFONT%20COLOR=%27#CD5B45%27>%2b20%2004%2019.5924&EO1202-0050174&033.493412&%2b20.072109&17.63&%20&%201&%20%20%202.79&%20%20%207.3&%200.05&20.21&%20&-1&%20%20%202.07&%20%20%205.7&%20%202.58&%20%3cBR%3e">\Ahref='VizieR-5?-ref=VIZ66296c952a6e22&-out.add=.&-source=I/267/out&APM-ID===EO1202-0050211&-out.orig=o' class='full'2 8.60002 13 58.12008+20 04 15.5928EO1202-0050211033.492167+20.07099820.00L 0      21.84   0 2.39 34.3 1.84   %0a%0a%3cP%3e%0a%3cFONT%20SIZE=%27-1%27%3e%3cEM%3e%3cFONT%20COLOR=%27#0000FF%27>%3cB%3eNote:%20The%20construction%20of%20the%20%0a%3cB%3eGSC-II%20%0ais%20still%20in%20progress:%20this%0aversion%20has%20no%20proper%20motions,%20and%20the%20magnitude%20limits%20are%2018.5%20in%20F%20%28red%29%0aand%2019.5%20in%20J%20%28blue%29.%20The%20data%20are%20%3cB%3e%3cFONT%20COLOR=%27#0000CD%27>copyrighted,%20check%20%0athe%20%3cB%3edata%20use%20Policy.%0a%3cP%3e%0a

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	2.595	02 13 58.43952	+20 04 19.8732	N33123222332	033.493498	+20.072187	1990.719	17.99	0.42			3	2.66	0.13

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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	3.006	02 13 58.41336	+20 04 19.6716	1100-0026092	033.493389	+20.072131	39	148	1975.5	0	0	5	20.28	17.52	19.36	17.94	17.66

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">Note: The Naval Observatory Merged Astrometric Dataset (NOMAD) contains astrometric and photometric data for over 1 billion stars derived from the Hipparcos (I/239), Tycho-2 (I/259), UCAC2 (I/289), and USNO-B1.0 (I/284) catalogs for astrometry and optical photometry, supplemented by 2MASS (II/246) near-infrared photometry.
An efficient remote query program findnomad1 is available in the cdsclient package, for Unix/Linux platforms

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	3.007	02 13 58.413336	+20 04 19.67016	1100-0026331	YM	033.4933889	+20.0721306	B	0.0	0.0	0.0	0.0	19.360	B	17.470	Y	17.940	B	16.917	15.721	15.433

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Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	GSC2.3	RAJ2000 deg	DEJ2000 deg	Epoch yr	Fmag mag	jmag mag	Vmag [****ClosingBrace(s)Inserted****]
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Vmag

%22>%5cFONT SIZE=-1magNmag
magClass

a
pixe

1 2.59002 13 58.43976+20 04 19.8768NC6Y002332033.493499+20.0721881990.71917.9919.7718.6918.513 2.66 0.13 %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	2.993	02 13 58.42032	+20 04 19.4448	033.493418	+20.072068	-2.4	-7.2	16.917	15.434	20.28	19.36	17.52	17.94	17.66	6	0

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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
mage_
magKmag
mage_
mag2Mkey

Bmag
magRmag
magFld

dT
yrfg

fs

M

1 3.10302 13 58.41866+20 04 19.2323XPM 220-0025795033.493411+20.072009 -1.54 -3.23 -1.25 -2.9617.98519.76918.68818.51316.917 0.18015.721 0.11915.434 0.195132322566919.117.5 41043.11891200M %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	2.992	02 13 58.42037	+20 04 19.4451	033.493418	+20.072068	0.087	0.087	19.769	0.300	17.985	0.300	18.208	0.400	16.866	0.500	1981.7900	1981.7900	-2.4	5.0	-7.2	5.0

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