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	2.607	10 44 52.69872	+46 44 35.5020	1350-07826209	161.219578	+46.743195			19.2	19.0	1953.203

%0a%0a%3cP%3e%0a%3cFONT%20SIZE=%27-1%27%3e%3cEM%3e%3cFONT%20COLOR=%27#0000FF%27>%3cB%3eNote:%20%3cB%3e%3cFONT%20COLOR=%27#CD5B45%27>%20The%20current%20version%20includes%20only%20the%20North%20%28POSS-I%20plates%29%3cP%3e%0a

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	3.418	10 44 52.61400	+46 44 36.2832	EO0709-0217658	161.219225	+46.743412	18.56		2	15.69	9.3	0.37	21.27		1	2.75	3.7	2.71
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%3cEM%3e1&%3cFONT%20COLOR=%27#CD5B45%27>%203.418&%3cFONT%20COLOR=%27#CD5B45%27>10%2044%2052.61400&%3cFONT%20COLOR=%27#CD5B45%27>%2b46%2044%2036.2832&EO0709-0217658&161.219225&%2b46.743412&18.56&%20&%202&%20%2015.69&%20%20%209.3&%200.37&21.27&%20&%201&%20%20%202.75&%20%20%203.7&%20%202.71&%20%3cBR%3e">\Ahref='VizieR-5?-ref=VIZ6639eaec69172&-out.add=.&-source=I/267/out&APM-ID===EO0709-0217722&-out.orig=o' class='full'2 8.05210 44 53.71200+46 44 34.4004EO0709-0217722161.223800+46.74288919.95  -1 0.09 3.5 0.3221.56L 0     1.61   3 9.58110 44 52.84680+46 44 45.6108EO0709-0217409161.220195+46.74600319.49  -1 -0.33 4.2 0.1721.56L 0     2.07   %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	3.169	10 44 52.63944	+46 44 35.7432	1367-0219073	161.219331	+46.743262	269	543	1974.6	0	0	4	19.90	19.73	20.81	19.59

%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 [****ClosingBrace(s)Inserted****]
">

Jmag

%22>%5cFONT SIZE=-1magHmag
magKmag
magR

1 3.17010 44 52.639344+46 44 35.739961367-0222895..161.2193306+46.7432611B 0.0 0.0 0.0 0.020.810B    19.590B         %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	RAJ2000 deg	DEJ2000 deg	Epoch yr	Fmag mag	jmag mag	Vmag mag	Nmag mag	Class	a pix	e
1	2.774	10 44 52.67832	+46 44 35.7288	N99L006405	161.219493	+46.743258	1992.037	19.54	20.30			3	2.93	0.31
2	8.007	10 44 53.70792	+46 44 34.4220	N99L006399	161.223783	+46.742895	1992.037	20.28				3	1.60	0.38
3	9.569	10 44 52.82400	+46 44 45.5712	N99L006420	161.220100	+46.745992	1992.037	19.81	22.01			3	1.94	0.08

%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	[****ClosingBrace(s)Inserted****]
">

mag&%">\BegDIVclass='sort-down ' </A>decNo

fl

1 3.52110 44 52.60776+46 44 35.5236161.219199+46.743201 -8.9 -19.4    19.9020.8119.7319.59   4 1 %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	3.193	10 44 52.64568	+46 44 35.2679	161.219357	+46.743130	0.139	0.154	20.299	0.300	19.535	0.300	19.333	0.101	18.453	0.126	2002.2100	2002.2100	-8.9	5.3	-19.4	5.3
2	9.175	10 44 52.81105	+46 44 45.1539	161.220046	+46.745876	0.058	0.054	22.013	0.300	19.810	0.300	20.309	0.132	18.958	0.152	2002.2100	2002.2100	56.4	8.3	41.6	8.3

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

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

%20

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

pmDE
mas/yr

e_
(...)

Nobs

Dt
yr

Rmag
mag

Bmag
mag

Nmag
mag

Vmag
mag

Jmag
mag

Hmag
mag

Kmag
mag

1 9.52510 44 52.812796+46 44 45.51114161.2200533 79.00+46.7459753 98.0061161+00064204 -7.3 2.9 -2.1 3.6 340.825 19.810 22.013           %0a%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"	RA_ICRS deg	DE_ICRS deg	rmag mag	pmRA mas/yr	e_ (...)	pmxRA mas/yr	e_ (...)	Chi2RA	pmGRA mas/yr	pmDE mas/yr	e_ (...)	pmxDE mas/yr	e_ (...)	Chi2DE	pmGDE mas/yr	Nobs	Flag	PS1	Gaia	DR9+DR12	Sloan	2M
1	2.722	10 44 52.6771384808	+46 44 36.095808237	161.21950720371	+46.74330679417	21.433039	4.718	60.334	-46.573	68.387	3.55209e-01		-19.135	20.392	-34.621	22.147	5.86207e-01		6	0	PS1	Gaia	DR9+DR12	Sloan	2M

%0a%0a

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

%22d:m:s%22&%">\BegDIVclass='sort-down ' </A>stringGSC2

RA_ICRS
deg

DE_ICRS
deg

objID

Epoch
yr

Class

Gmag
mag

OMag
mag

Bjmag
mag

Fpgmag
mag

Epgmag
mag

Npgmag
mag

Umag
mag

Bmag
mag

Vmag
mag

umag
mag

gmag
mag

rmag
mag

imag
mag

zmag
mag

ymag
mag

Jmag
mag

Hmag
mag

Ksmag
mag

Zmag
mag

Ymag
mag

W1mag
mag

W2mag
mag

W3mag
mag

W4mag
mag

FUVmag
mag

NUVmag
mag

a
pix

e
pix

PA
pix

1 2.78610 44 52.6941552000+46 44 35.052180000N99L060955161.21955898000+46.74307005000 12323221609552013.8343                    21.98721.00921.13920.765                               2 2.81610 44 52.6782072000+46 44 36.680460000N99L060908161.21949253000+46.74352235000 12323221609082010.8173                    21.707  21.012                                 3 3.14610 44 52.6282162731+46 44 35.712379889N99L006405161.21934086000+46.74325990000 1232322164052013.7093    20.29950019.535200          22.98421.88921.60521.02620.244                         2.934 0.314 29.3 4 8.25210 44 53.7243336000+46 44 34.063944000N99L006399161.22385139000+46.74279554000 1232322163992013.9753      20.283000          24.26522.78821.85121.16420.52620.3399          16.17315.72012.219 8.619     1.596 0.377 4.5 5 9.34310 44 52.8325487898+46 44 45.327394196N99L006420161.22010537000+46.74592919000 1232322164202013.1263    22.01370019.810500          22.93721.91720.99420.58720.28619.8661          16.11515.47811.482 8.460     1.944 0.082146.6 %0a%0a%0a%0a%3cP%3e%0a%3cFONT%20SIZE=%27-1%27%3e%3cEM%3e%3cFONT%20COLOR=%27#0000FF%27>%3cB%3eNote:%20SDSS%20is%20also%20available%20from%20http://www.sdss.org/%3cP%3e%0a

Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	mode	cl	SDSS	m_	zsp	umag mag	e_ mag	gmag mag	e_ mag	rmag mag	e_ mag	imag mag	e_ mag	zmag mag	e_ mag	RA_ICRS deg	DE_ICRS deg	ObsDate yr	Q
1	3.260	10 44 52.64215	+46 44 35.2476	1	3	J104452.64+464435.2			21.330	0.453	19.912	0.040	19.457	0.040	19.126	0.043	18.898	0.132	161.219336	+46.743112	2002.2187	2
2	8.322	10 44 53.73168	+46 44 34.0800	1	3	J104453.73+464434.0			23.611	1.484	22.729	0.219	21.259	0.090	20.598	0.070	20.088	0.168	161.223882	+46.742800	2002.2187	2
3	9.193	10 44 52.82544	+46 44 45.1932	1	3	J104452.82+464445.1			23.345	1.497	21.530	0.093	20.315	0.048	19.790	0.041	19.538	0.124	161.220106	+46.745887	2002.2187	2

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