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	3.893	16 24 43.65816	+01 02 13.3620	0900-08632461	246.181909	+01.037045			18.8	17.3	1950.446
2	4.993	16 24 43.46400	+01 02 05.1612	0900-08632407	246.181100	+01.034767			18.1	17.9	1950.446
3	9.700	16 24 43.91688	+01 02 00.8016	0900-08632526	246.182987	+01.033556			19.3	19.0	1950.446

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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 [****ClosingBrace(s)Inserted****]
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b-r

%22>%5cFONT SIZE=-1magMflag

1 1.77716 24 43.54488+01 02 08.2500EO0143-0095752246.181437+01.03562517.28   2 30.35 21.5 0.6718.67   2 23.04 17.1 1.39* %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	3.852	16 24 43.68144	+01 02 13.2648	N10210035879	246.182006	+01.037018	1994.428	17.55	0.40	19.38	0.40	3	5.40	0.49
2	5.724	16 24 43.46184	+01 02 04.3512	N10210035852	246.181091	+01.034542	1994.428	17.41	0.40	18.86	0.40	3	6.62	0.52

%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	3.961	16 24 43.65816	+01 02 13.4304	0910-0264916	246.181909	+01.037064	139	145	1975.7	0	0	5	19.59	17.43	18.86	17.29	17.37
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%3cEM%3e1&%3cFONT%20COLOR=%27#CD5B45%27>%203.961&%3cFONT%20COLOR=%27#CD5B45%27>16%2024%2043.65816&%3cFONT%20COLOR=%27#CD5B45%27>%2b01%2002%2013.4304&0910-0264916&246.181909&%2b01.037064&139&145&1975.7&%20%20%20%20%200&%20%20%20%20%200&5&19.59&17.43&18.86&17.29&17.37%3cBR%3e">\Ahref='VizieR-5?-ref=VIZ662a91e4228b74&-out.add=.&-source=I/284/out&USNO-B1.0===0910-0264914&-out.orig=o' class='full'2 4.34016 24 43.50552+01 02 05.57160910-0264914246.181273+01.0348819576371965.1 0 0319.8718.02  17.60   3 4.84816 24 43.45944+01 02 05.37000910-0264913246.181081+01.034825 60 481978.0 6 66320.01  18.80  17.94 4 9.52916 24 43.88088+01 02 00.74040910-0264918246.182837+01.0335392581041971.9 0 0420.4019.2920.4419.15   %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	3.961	16 24 43.657992	+01 02 13.43004	0910-0269427	YM	246.1819083	+01.0370639	B	0.0	0.0	0.0	0.0	18.350	Y	17.970	Y	17.290	B	16.498	16.277	15.638
2	4.342	16 24 43.505328	+01 02 05.57016	0910-0269425	..	246.1812722	+01.0348806	B	0.0	0.0	0.0	0.0	19.870	o			17.600	B
3	4.849	16 24 43.459344	+01 02 05.37000	0910-0269424	..	246.1810806	+01.0348250	B	6.0	2.0	66.0	1.0	18.800	B
4	9.528	16 24 43.880664	+01 02 00.74004	0910-0269429	..	246.1828361	+01.0335389	B	0.0	0.0	0.0	0.0	20.440	B			19.150	B

%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 [****ClosingBrace(s)Inserted****]
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%3cEM%3e%20%3cFONT%20COLOR=%27#CD5B45%27>_RAJ2000

%20

%22>%5cFONT SIZE=-1"h:m:s" _DEJ2000
"d:m:s"

GSC2.3

RAJ2000
deg

DEJ2000
deg

Epoch
yr

Fmag
mag

jmag
mag

Vmag
mag

Nmag
mag

Class

a
pix

e

1 3.85516 24 43.68144+01 02 13.2684N3LV005879246.182006+01.0370191994.42817.5519.38  17.113 5.40 0.49 2 5.72416 24 43.46184+01 02 04.3512N3LV005852246.181091+01.0345421994.42817.4118.86  17.543 6.62 0.52 %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	4.043	16 24 43.67088	+01 02 13.4880	246.181962	+01.037080	4.8	1.6	16.498	15.639	19.59	18.86	17.43	17.29	17.37	6	0
2	4.973	16 24 43.45920	+01 02 05.2260	246.181080	+01.034785	-10.5	-12.1			19.87		18.02	17.60		3	0
3	5.130	16 24 43.45608	+01 02 05.0712	246.181067	+01.034742	1.2	62.4			20.01	18.80			17.94	3	0
4	9.601	16 24 43.85256	+01 02 00.4920	246.182719	+01.033470	-12.2	-3.8			20.40	20.44	19.29	19.15		4	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 [****ClosingBrace(s)Inserted****]
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pmRAx

%20

%22>%5cFONT SIZE=-1mas/yrpmDEx
mas/yr

Fmag
mag

Bjmag
mag

Vmag
mag

Nmag
mag

Jmag
mag

e_
mag

Hmag
mag

e_
mag

Kmag
mag

e_
mag

2Mkey

Bmag
mag

Rmag
mag

Fld

dT
yr

fg

fs

M

1 4.52816 24 43.69394+01 02 13.9165XPM 182-0384931246.182058+01.037199 14.40 12.85 14.21 12.9617.55019.377  17.10516.498 0.13516.277 0.20215.639 0.253 40233585418.817.3 62648.85823400M %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	3.874	16 24 43.65480	+01 02 13.3474	246.181895	+01.037041	0.020	0.052	19.377	0.300	17.550	0.300	18.122	0.083	16.929	0.112	1999.2100	1999.2100	4.8	4.4	1.6	4.4
2	4.973	16 24 43.45922	+01 02 05.2261	246.181080	+01.034785	0.133	0.133	19.870	0.400	17.600	0.400	17.715	0.400	16.104	0.500	1965.1000	1965.1000	-10.5	6.4	-12.1	6.4
3	5.873	16 24 43.44532	+01 02 04.3103	246.181022	+01.034531	0.005	0.004	18.855	0.300	17.407	0.300	18.220	0.081	17.444	0.111	1999.2100	1999.2100	1.2	6.8	62.4	6.8
4	9.908	16 24 43.86600	+01 02 00.2402	246.182775	+01.033400	0.055	0.052	20.686	0.300	19.150	0.400	19.653	0.093	18.757	0.120	1999.2100	1999.2100	-12.2	5.4	-3.8	5.4

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Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	URAT1	RAICRS deg	DEICRS [****ClosingBrace(s)Inserted****]
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DEICRS

%20

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

f.mag
mag

e_
mag

pmRA
mas/yr

pmDE
mas/yr

Jmag
mag

Hmag
mag

Kmag
mag

Bmag
mag

Vmag
mag

gmag
mag

rmag
mag

imag
mag

1 3.88616 24 43.692722+01 02 13.87354456-156123246.1819581+01.03703642013.29518.169   -25.7 -40.816.49816.27715.639           2 5.90516 24 43.454676+01 02 04.20216456-156120246.1810611+01.03450062013.25518.096 0.025                     %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 mas/yr	e_ (...)	Nobs	Dt yr	Rmag mag	Bmag mag	Nmag mag	Vmag mag	Jmag mag	Hmag mag	Kmag mag
1	4.035	16 24 43.665447	+01 02 13.49097	246.1819394	55.00	+01.0370808	96.00	53827+0005879	4	7.0	1.9	15.8	3.4	7	46.842	17.550	19.377	17.105		16.498	16.277	15.639
2	5.939	16 24 43.444805	+01 02 04.23992	246.1810200	24.00	+01.0345111	54.00	53827+0005852	0	2.7	0.9	-9.3	2.0	8	46.842	17.407	18.855	17.541

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