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	2.027	10 52 31.67352	-03 52 38.3232	0825-07326821	163.131973	-03.877312			19.9	18.3	1954.153

%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	2.632	10 52 31.71408	-03 52 38.3700	EO1397-0210548	163.132142	-03.877325	18.66		1	3.68	6.9	0.15	20.97		-1	1.13	7.6	2.31

%0a%0a%5b%2a%2a%2a%2aClosingBrace%28s%29Inserted%2a%2a%2a%2a%5d">">\scripttype='text/javascript' ts_init('!ext/apm.exe_2');

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	1.931	10 52 31.66656	-03 52 38.6184	S12013224602	163.131944	-03.877394	1985.055	17.97	0.43			3	4.05	0.41

%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	1.565	10 52 31.64280	-03 52 38.3916	0861-0214843	163.131845	-03.877331	138	243	1970.9	0	0	4	20.84	18.46	20.90	18.35
2	2.690	10 52 31.58088	-03 52 41.0304	0861-0214842	163.131587	-03.878064	999	999	1973.7	0	0	2		18.61		20.83
[****ClosingBrace(s)Inserted****]
">

%3cEM%3e2&%3cFONT%20COLOR=%27#CD5B45%27>%202.690&%3cFONT%20COLOR=%27#CD5B45%27>10%2052%2031.58088&%3cFONT%20COLOR=%27#CD5B45%27>-03%2052%2041.0304&0861-0214842&163.131587&-03.878064&999&999&1973.7&%20%20%20%20%200&%20%20%20%20%200&2&%20&18.61&%20&20.83&%20%3cBR%3e">\Ahref='VizieR-5?-ref=VIZ6641c4c9271961&-out.add=.&-source=I/284/out&USNO-B1.0===0861-0214844&-out.orig=o' class='full'3 2.93310 52 31.67808-03 52 40.47240861-0214844163.131992-03.8779099689991980.8 0 03  19.33  20.1718.30 4 5.51110 52 31.20600-03 52 36.04080861-0214841163.130025-03.8766789999991969.6 0 0220.80    19.71   %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	1.563	10 52 31.642656	-03 52 38.39016	0861-0219414	..	163.1318444	-03.8773306	B	0.0	0.0	0.0	0.0	20.900	B			18.350	B
2	2.689	10 52 31.580664	-03 52 41.03004	0861-0219413	Y.	163.1315861	-03.8780639	B	0.0	0.0	0.0	0.0			17.750	Y	20.830	B
3	2.931	10 52 31.678008	-03 52 40.46988	0861-0219415	..	163.1319917	-03.8779083	B	0.0	0.0	0.0	0.0					20.170	B
4	5.511	10 52 31.206000	-03 52 36.04008	0861-0219412	..	163.1300250	-03.8766778	B	0.0	0.0	0.0	0.0	20.800	o			19.710	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 "h:m:s"	[****ClosingBrace(s)Inserted****]
">

%22h:m:s%22&%">\BegDIVclass='sort-down ' </A>string _DEJ2000
"d:m:s"GSC2.3

RAJ2000
degDEJ2000
degEpoch
yrFmag
magjmag
magVmag
magNmag
magClass

a
pixe

1 1.93410 52 31.66680-03 52 38.6148S4U2004602163.131945-03.8773931985.05517.9721.39  18.133 4.05 0.41 %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	1.658	10 52 31.64280	-03 52 37.8696	163.131845	-03.877186	-6.4	3.9			20.84	20.90	18.46			3	0
2	1.846	10 52 31.66128	-03 52 38.5464	163.131922	-03.877374	-15.2	36.6					19.33		18.30	2	0

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

e_

%20

%22>%5cFONT SIZE=-1magmagGrvs
mag

e_
mag

alphaEpoch
yr

deltaEpoch
yr

pmRA
mas/yr

e_
(...)

pmDE
mas/yr

e_
(...)

1 1.65810 52 31.64280-03 52 37.8698163.131845-03.877186 0.133 0.13320.900 0.40018.460 0.40018.512 0.40016.816 0.5001963.88001963.8800 -6.4 9.6 3.9 9.6 2 1.84610 52 31.66128-03 52 38.5462163.131922-03.877374 0.163 0.16321.389 0.30017.971 0.30017.344 0.40015.297 0.5001975.18001975.1800 -15.2 7.7 36.6 7.7 %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	1.345	10 52 31.628065	-03 52 38.45883	163.1317836	118.00	-03.8773497	228.00	39034+0004602	4	-13.2	4.2	-10.1	8.2	9	42.040	17.971	21.389	18.126

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

pmxRA

%20

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

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 1.96210 52 31.6547234643-03 52 38.337633209163.13195557513-03.8773332655519.852812 21.872 8.231 20.944 8.285 3.52289e-01   -6.212 6.568 -9.789 6.779 7.94936e-01   5 0PS1Gaia DR9+DR12Sloan2M 2 3.54510 52 31.2874677746-03 52 37.755266465163.13044934658-03.8771088278321.439457 30.493 15.443 30.493 15.443 2.38676e-01   16.349 30.391 16.349 30.391 3.27062e-01   3 0PS1Gaia DR9+DR12Sloan2M %0a%0a

Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	GSC2	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	1.813	10 52 31.6246200000	-03 52 37.145892000	S4U2037261	163.13176925000	-03.87698497000	2120132237261	2013.025	3											22.549	20.580	20.239	20.010	19.9186
[****ClosingBrace(s)Inserted****]
1	1.813	10 52 31.6246200000	-03 52 37.145892000	S4U2037261	163.13176925000	-03.87698497000	2120132237261	2013.025	3											22.549	20.580	20.239	20.010	19.9186

%22>\Ahref='VizieR-5?-ref=VIZ6641c4c9271961&-out.add=.&-source=I/353/gsc242&-c=163.13193275000%20-03.87735772000,eq=ICRS,rs=2&-out.orig=o' class='full'2 1.88110 52 31.6921515632-03 52 38.350840792S4U2004602163.13193275000-03.87735772000 2120132246022012.6543  20.73140021.38960017.971200  18.126500        20.39618.71418.19719.080                         4.054 0.405 16.6 3 1.95810 52 31.6690224000-03 52 38.472024000S4U2036955163.13195426000-03.87735334000 21201322369552013.0253                    21.23119.85419.15119.05118.8957          15.02514.81312.460 8.310           4 3.62410 52 31.3018008000-03 52 37.634808000S4U2032003163.13042417000-03.87712078000 21201322320032013.1373                    22.25521.44420.91420.90620.3329                             %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"	WISE	RAJ2000 deg	DEJ2000 deg	eeMaj arcsec	eeMin arcsec	Im	W1mag mag	e_ mag	W2mag mag	e_ mag	W3mag mag	e_ mag	W4mag mag	e_ mag	Jmag mag	Hmag mag	Kmag mag	ccf	ex	var	d2M arcsec	2M
1	1.673	10 52 31.65001	-03 52 38.4226	J105231.65-035238.4	163.131875	-03.877340	0.225	0.207	Im	14.978	0.041	14.852	0.088	12.616		8.561					0000	0	01nn		2M

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