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	20.720	06 30 58.72200	+43 54 08.6832	1275-06356054	097.744675	+43.902412			18.2	17.5	1953.187

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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	20.792	06 30 58.73112	+43 54 08.3700	N230001121805	097.744713	+43.902325	1989.897	17.23	0.34	18.62	0.34	0	3.00	0.08

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

%22>"h:m:s" ">\BegDIVclass='sort-down ' </A>string _DEJ2000
"d:m:s"USNO-B1.0

RAJ2000
degDEJ2000
dege_RAJ2000
mase_DEJ2000
masEpoch
yrpmRA
mas/yrpmDE
mas/yrNdet

B1mag
magR1mag
magB2mag
magR2mag
magImag
mag 112.73806 30 57.61152+43 54 16.17121339-0171746097.740048+43.9044921001841971.5 0 02  19.29  20.08   220.53506 30 58.70616+43 54 08.52121339-0171751097.744609+43.902367 29 521977.4 0 0519.1917.3818.3717.3516.80 324.98706 30 54.53808+43 54 11.27161339-0171738097.727242+43.9031311621881979.6 0 03  19.82  20.3518.82 428.27806 30 59.12544+43 54 20.03041339-0171752097.746356+43.9055642082391992.4 0 02    21.8219.81   %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	12.736	06 30 57.611328	+43 54 16.17012	1339-0174831	..	097.7400472	+43.9044917	B	0.0	0.0	0.0	0.0					20.080	B
2	20.533	06 30 58.705992	+43 54 08.52012	1339-0174836	YM	097.7446083	+43.9023667	B	0.0	0.0	0.0	0.0	18.050	Y	16.930	Y	17.350	B	16.103	15.621	15.663
3	24.988	06 30 54.538008	+43 54 11.27016	1339-0174823	..	097.7272417	+43.9031306	B	0.0	0.0	0.0	0.0					20.350	B
4	28.277	06 30 59.125344	+43 54 20.03004	1339-0174837	..	097.7463556	+43.9055639	B	0.0	0.0	0.0	0.0	21.820	B			19.810	B

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

%3cEM%3e%20%3cFONT%20COLOR=%27#CD5B45%27>_DEJ2000

%20

%22>%5cFONT SIZE=-1"d:m:s"CMC14

f_

RAICRS
deg

DEICRS
deg

r'mag
mag

Nt

Jmag
mag

Hmag
mag

Ksmag
mag

120.69106 30 58.72296+43 54 08.1864063058.7+435408  097.744679+43.90227417.414 116.104     %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	3.496	06 30 57.12768	+43 54 07.6032	N8P1021783	097.738032	+43.902112	1989.897	20.55				3	1.48	0.39
2	13.007	06 30 57.64848	+43 54 16.1640	N8P1021863	097.740202	+43.904490	1989.897	19.83				3	2.70	0.42
3	20.795	06 30 58.73136	+43 54 08.3736	N8P1021805	097.744714	+43.902326	1989.897	17.23	18.62	17.73	16.80	0	3.00	0.08
4	24.463	06 30 54.57624	+43 54 10.5624	N8P1021829	097.727401	+43.902934	1989.897	19.86			18.79	3	2.55	0.40
5	25.618	06 30 56.81040	+43 53 41.1864	N8P1021577	097.736710	+43.894774	1989.897	20.40				3	1.44	0.04
6	28.312	06 30 59.16336	+43 54 19.3032	N8P1021888	097.746514	+43.905362	1989.897	19.69	22.18			3	2.74	0.33

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

%27%29%22%20onMouseOut=%22laz%28%29%22>b2mag

%20

%22>%5cFONT SIZE=-1magr1mag
mag

r2mag
mag

imag
mag

No

fl

112.84606 30 57.62904+43 54 16.1424097.740121+43.904484 3.7 2.2        19.2920.08   2 0 220.57406 30 58.71120+43 54 08.3304097.744630+43.902314 -0.9 -5.416.10415.66319.1918.3717.3817.3516.80 6 0 324.89906 30 54.54264+43 54 11.0412097.727261+43.903067 -1.1 -5.3        19.8220.3518.82 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	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	20.463	06 30 58.70041	+43 54 08.3950	XPM 267-0318970	097.744585	+43.902332	-3.76	-2.13	-3.70	-1.91	17.226	18.620	17.730	16.801	16.104	0.101	15.621	0.152	15.663		388494928	18.2	17.5	206	45.650619	0	0	M

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

RAJ2000

%20

%22>%5cFONT SIZE=-1degDEJ2000
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_
(...)

120.57506 30 58.71122+43 54 08.3302097.744630+43.902314 0.091 0.09118.620 0.30017.226 0.30017.468 0.40016.371 0.5001981.92001981.9200 -0.9 4.6 -5.4 4.6 224.89806 30 54.54266+43 54 11.0407097.727261+43.903067 0.133 0.13322.351 0.50019.860 0.30019.890 0.40018.170 0.5001979.64001979.6400 -1.1 7.0 -5.3 7.0 328.08806 30 59.13557+43 54 19.4028097.746398+43.905390 0.400 0.40022.175 0.30019.689 0.30019.721 0.40018.004 0.5001989.90001989.9000 -29.6 3.0 10.0 15.9 %0a%0a%3cP%3e%0a%3cFONT%20SIZE=%27-1%27%3e%3cEM%3e%3cFONT%20COLOR=%27#0000FF%27>%3cB%3eNote:%20Zone%20-40/%2b50deg%3cP%3e%0a

Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	CMC15	RA_ICRS deg	DE_ICRS deg	r'mag mag	pflag	Nt	Jmag mag	Hmag mag	Ksmag mag
1	20.699	06 30 58.72370	+43 54 08.1830	063058.7+435408	097.744682	+43.902273	17.414		1	16.104

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