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	2.431	17 05 27.88488	+69 13 16.8708	1575-03747954	256.366187	+69.221353			18.0	18.1	1953.452
2	3.847	17 05 28.17744	+69 13 15.6000	1575-03747966	256.367406	+69.221000			18.7	18.7	1953.452
3	7.428	17 05 26.62008	+69 13 21.3528	1575-03747908	256.360917	+69.222598			16.5	15.7	1953.452

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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 7.17017 05 26.67600+69 13 21.4428EO0756-0301619256.361150+69.22262314.71   1 43.33 28.0 0.7115.84   1 59.39 31.6 1.13   %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	6.495	17 05 26.79264	+69 13 21.1656	N11310307275	256.361636	+69.222546	1993.625	14.06	0.38	14.91	0.37	3	13.04	0.73

%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	1.911	17 05 27.81888	+69 13 17.5116	1592-0135171	256.365912	+69.221531	217	120	1967.1	-4	8	3	18.74	17.98			16.93
2	2.375	17 05 27.52944	+69 13 18.6420	1592-0135169	256.364706	+69.221845	528	0	1964.7	-62	46	3	19.41	18.77	16.40
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%3cEM%3e2&%3cFONT%20COLOR=%27#CD5B45%27>%202.375&%3cFONT%20COLOR=%27#CD5B45%27>17%2005%2027.52944&%3cFONT%20COLOR=%27#CD5B45%27>%2b69%2013%2018.6420&1592-0135169&256.364706&%2b69.221845&528&%20%200&1964.7&%20%20%20-62&%20%20%20%2046&3&19.41&18.77&16.40&%20&%20%3cBR%3e">\Ahref='VizieR-5?-ref=VIZ663fc21926869c&-out.add=.&-source=I/284/out&USNO-B1.0===1592-0135167&-out.orig=o' class='full'3 5.61417 05 26.92944+69 13 20.47081592-0135167256.362206+69.2223536563251973.9 0 02  15.92    15.56 4 6.34117 05 28.60416+69 13 13.93321592-0135174256.369184+69.2205373387711978.1 0 0319.93  18.8719.70   5 7.61017 05 26.60352+69 13 21.68041592-0135165256.360848+69.2226891392651971.9 0 0417.0915.2915.0914.79   %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	1.912	17 05 27.818664	+69 13 17.51016	1592-0137450	..	256.3659111	+69.2215306	B	-4.0	5.0	8.0	3.0	18.740	o			17.980	e
2	2.376	17 05 27.529344	+69 13 18.63984	1592-0137448	..	256.3647056	+69.2218444	B	-62.0	13.0	46.0	0.0	16.400	B			18.770	e
3	5.614	17 05 26.929344	+69 13 20.47008	1592-0137446	..	256.3622056	+69.2223528	B	0.0	0.0	0.0	0.0					15.920	e
4	6.344	17 05 28.603992	+69 13 13.92996	1592-0137453	..	256.3691833	+69.2205361	B	0.0	0.0	0.0	0.0	18.870	B			19.700	B
5	7.611	17 05 26.603328	+69 13 21.68004	1592-0137444	YM	256.3608472	+69.2226889	B	0.0	0.0	0.0	0.0	17.750	Y	17.320	Y	14.790	B	16.471	15.631	14.532

%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

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%3cEM%3e%20%3cFONT%20COLOR=%27#CD5B45%27>Full

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%22> _r
arcsec

_RAJ2000
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_DEJ2000
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GSC2.3

RAJ2000
deg

DEJ2000
deg

Epoch
yr

Fmag
mag

jmag
mag

Vmag
mag

Nmag
mag

Class

a
pix

e

1 6.49517 05 26.79288+69 13 21.1692N4LO007275256.361637+69.2225471993.62514.0614.9116.6515.783 13.04 0.73 %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	2.251	17 05 27.83184	+69 13 17.1228	256.365966	+69.221423	-6.6	7.2			18.74		17.98		16.93	3	0
2	2.387	17 05 27.55008	+69 13 18.3000	256.364792	+69.221750	-62.3	47.0			19.41	16.40	18.77			3	0
3	6.182	17 05 26.86968	+69 13 21.4032	256.361957	+69.222612	-11.0	29.3	16.471	14.532			15.92		15.56	3	1
4	6.382	17 05 26.83680	+69 13 21.5076	256.361820	+69.222641	27.6	0.8	16.471	14.532	17.09	15.09	15.29	14.79		5	1
5	6.669	17 05 28.60440	+69 13 13.5480	256.369185	+69.220430	0.1	-16.4			19.93	18.87		19.70		3	0

%0a%0a

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

%20

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

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mas/yr

Fmag
mag

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mag

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mag

Jmag
mag

e_
mag

Hmag
mag

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e_
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2Mkey

Bmag
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Fld

dT
yr

fg

fs

M

1 6.17017 05 26.88526+69 13 21.5831XPM 318-0185223256.362022+69.222662 28.26 2.04 28.67 2.6714.05814.91316.64715.78316.471 0.15715.632 0.18914.532   66397987416.515.7 4445.92694500M %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	2.251	17 05 27.83186	+69 13 17.1233	256.365966	+69.221423	0.133	0.133	18.740	0.400	17.980	0.400	18.152	0.400	17.497	0.500	1967.1200	1967.1200	-6.6	6.9	7.2	6.9
2	2.387	17 05 27.55005	+69 13 18.3001	256.364792	+69.221750	0.133	0.133	16.400	0.400	18.770	0.400	18.270	0.400	19.951	0.500	1964.7700	1964.7700	-62.3	8.3	47.0	8.3
3	6.383	17 05 26.83680	+69 13 21.5080	256.361820	+69.222641	0.075	0.071	14.913	0.300	14.058	0.300	14.247	0.400	13.523	0.500	1988.9000	1988.9000	27.6	4.0	0.8	4.0
4	6.669	17 05 28.60439	+69 13 13.5481	256.369185	+69.220430	0.133	0.133	18.870	0.400	19.700	0.400	19.436	0.400	20.001	0.500	1978.1600	1978.1600	0.1	7.5	-16.4	7.5

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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

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

f.mag
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mas/yr

pmDE
mas/yr

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mag

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imag
mag

1 6.67517 05 26.874185+69 13 21.54817797-118314256.3615189+69.22258032013.08317.146 0.030 -44.6 -19.816.47115.63214.532           %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	6.996	17 05 26.709394	+69 13 21.42796	256.3612891	258.00	+69.2226189	300.00	55116+0007275	4	-12.8	11.2	2.2	13.0	5	41.011	14.058	14.913	15.783	16.647	16.471	15.632	14.532

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