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	4.641	10 03 25.80888	+01 01 43.4712	0900-06584223	150.857537	+01.028742			18.2	17.5	1952.084

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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	4.423	10 03 25.83936	+01 01 43.2516	EO0470-0043515	150.857664	+01.028681	17.76		1	9.72	10.0	0.36	19.03		1	7.17	11.3	1.27
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Note: The construction of the GSC-II is still in progress: this version has no proper motions, and the magnitude limits are 18.5 in F (red) and 19.5 in J (blue). The data are copyrighted, check the data use Policy.

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	4.336	10 03 25.83672	+01 01 43.4316	N20212132426	150.857653	+01.028731	1997.110	17.49	1.08	18.35	1.08	3	4.93	0.54

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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	3.989	10 03 25.84608	+01 01 43.8132	0910-0188308	150.857692	+01.028837	999	999	1974.5	0	0	2		18.48		18.69
2	4.782	10 03 25.80216	+01 01 43.3704	0910-0188306	150.857509	+01.028714	179	40	1979.1	0	0	5	18.02	17.59	18.38	17.61	17.73
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%3cEM%3e2&%3cFONT%20COLOR=%27#CD5B45%27>%204.782&%3cFONT%20COLOR=%27#CD5B45%27>10%2003%2025.80216&%3cFONT%20COLOR=%27#CD5B45%27>%2b01%2001%2043.3704&0910-0188306&150.857509&%2b01.028714&179&%2040&1979.1&%20%20%20%20%200&%20%20%20%20%200&5&18.02&17.59&18.38&17.61&17.73%3cBR%3e">\Ahref='VizieR-5?-ref=VIZ663fb72212c7c7&-out.add=.&-source=I/284/out&USNO-B1.0===0910-0188309&-out.orig=o' class='full'3 9.88810 03 26.60088+01 01 40.56240910-0188309150.860837+01.0279341453051982.1 -136 -126319.68    18.7718.49 %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	3.992	10 03 25.846008	+01 01 43.80996	0910-0192221	..	150.8576917	+01.0288361	B	0.0	0.0	0.0	0.0					18.690	B
2	4.784	10 03 25.801992	+01 01 43.37004	0910-0192219	YM	150.8575083	+01.0287139	B	0.0	0.0	0.0	0.0	18.290	Y			17.610	B	17.056	16.187	15.621
3	9.887	10 03 26.600664	+01 01 40.55988	0910-0192222	..	150.8608361	+01.0279333	B	-136.0	5.0	-126.0	10.0	19.680	o			18.770	B

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

GSC2.3

%22>RAJ2000
degDEJ2000
degEpoch
yrFmag
magjmag
magVmag
magNmag
magClass

a
pixe

1 4.33110 03 25.83696+01 01 43.4352N6SN002426150.857654+01.0287321997.11017.4918.35  17.523 4.93 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	4.101	10 03 25.82160	+01 01 44.1696	150.857590	+01.028936	16.8	6.8	17.057	15.622			18.48	18.69		3	1
2	4.780	10 03 25.80072	+01 01 43.4028	150.857503	+01.028723	0.7	1.0	17.057	15.622	18.02	18.38	17.59	17.61	17.73	6	0
3	9.806	10 03 26.59416	+01 01 40.5624	150.860809	+01.027934	-142.2	-124.6			19.68			18.77	18.49	3	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	[****ClosingBrace(s)Inserted****]
">

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

Bmag
magRmag
magFld

dT
yrfg

fs

M

1 4.63810 03 25.80242+01 01 43.6152XPM 182-0309674150.857510+01.028782 -3.10 6.60 -3.62 6.6517.49418.354  17.52217.057 0.22816.187 0.21215.622 0.241133488221618.217.5 61048.01145500M %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	4.432	10 03 25.83378	+01 01 43.3337	150.857641	+01.028704	0.034	0.018	18.354	0.300	17.494	0.300	18.098	0.082	17.181	0.111	2000.3400	2000.3400	0.7	4.3	1.0	4.3

%0a%0a%3cP%3e%0a%3cFONT%20SIZE=%27-1%27%3e%3cEM%3e%3cFONT%20COLOR=%27#0000FF%27>%3cB%3eNote:%20%3cP%3e%0a