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	5.007	08 58 36.55152	+54 19 02.7012	1425-07252813	134.652298	+54.317417			15.1	12.7	1954.148
2	7.206	08 58 36.15072	+54 18 51.4116	1425-07252795	134.650628	+54.314281			18.7	15.0	1954.148
3	8.510	08 58 36.05280	+54 18 50.2128	1425-07252789	134.650220	+54.313948			19.3	16.8	1954.148

%0a%0a%3cP%3e%0a%3cFONT%20SIZE=%27-1%27%3e%3cEM%3e%3cFONT%20COLOR=%27#0000FF%27>%3cB%3eNote:%20The%20%3cB%3eGuide%20Star%20Catalog%20has%20been%20constructed%20to%20support%20the%20%0aoperational%20need%20of%20the%20Hubble%20Space%20Telescope.%0aIt%20contains%20over%2025%20million%20positions%20for%20about%2019%20million%0aobjects,%20of%20which%20more%20than%2015%20million%20are%20classified%20as%20stars.%0aThe%20version%20%3cB%3e1.2%20is%20a%20new%20astrometric%20reduction%20which%20results%20in%0aabsolute%20position%20errors%20about%200.3-0.4%20arcsec.%0a%28see%20GSC%20pages%20at%20URL%20http://www-gsss.stsci.edu/gsc/gsc.html%29%0a%3cP%3e%0a

Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	GSC	RAJ2000 deg	DEJ2000 deg	PosErr arcsec	Pmag mag	e_ mag	n_	Class	Plate	Epoch yr
1	4.85	08 58 36.5472	+54 19 02.532	0380500647	134.65228	+54.31737	0.2	14.48	0.28	1	3	021E	1984.178

%0a%0a%3cP%3e%0a%3cFONT%20SIZE=%27-1%27%3e%3cEM%3e%3cFONT%20COLOR=%27#0000FF%27>%3cB%3eNote:%20The%20%3cB%3eGSC-ACT%20%3cEM%3e%28or%20%3cB%3eGSC1.3%29%0ais%20a%20recalibration%20of%20the%20%3cB%3e<%25E%20I/220%7cGSC1.1>,%20the%20catalogue%20constructed%20%0ato%20support%20the%20operational%20need%20of%20the%20Hubble%20Space%20Telescope,%0awith%20the%20%3cB%3e<%25E%20I/246%7cACT>,%20the%20combination%20of%20the%20Astrographic%20Catalogue%0aand%20the%20%3cB%3e%3cEM%3eTycho%20catalogue%20derived%20from%20the%20%3cEM%3e<%25E%20I/239%7cHipparcos>%0amission;%20see%20http://www.projectpluto.com/gsc_act.htm%20for%20more%20details%0aabout%20this%20recalibration.%0a%3cP%3e%0a

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"d:m:s"GSC

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degDEJ2000
degPosErr
arcsecPmag
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Class

Epoch
yr 1 4.7308 58 36.5352+54 19 02.4600380500647134.65223+54.31735 0.214.49 0.29 131984.178 %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	7.299	08 58 36.43488	+54 19 05.6532	EO0982-0102104	134.651812	+54.318237	20.00	L	0				12.02		2	28.43	50.3	-7.98

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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 [****ClosingBrace(s)Inserted****]
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%22> 1 4.14808 58 36.61368+54 19 00.9660N233100028134.652557+54.3169351991.11010.10 0.3312.13 0.273 20.72 0.22 %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	3.705	08 58 35.89752	+54 18 56.2428	1443-0195259	134.649573	+54.315623	982	999	1972.6	0	0	2	18.14			17.16
2	4.862	08 58 36.52152	+54 19 02.7012	1443-0195266	134.652173	+54.317417	68	132	1979.4	0	0	5	14.15	11.11	12.30	9.91	10.81
3	6.918	08 58 36.10536	+54 18 51.7500	1443-0195262	134.650439	+54.314375	121	325	1974.3	0	0	4	18.75	14.32	18.48	14.26
4	7.263	08 58 36.84744	+54 18 53.7804	1443-0195270	134.653531	+54.314939	999	885	1972.6	0	0	2		17.12		16.83
5	7.838	08 58 36.10488	+54 18 50.8212	1443-0195261	134.650437	+54.314117	140	322	1979.4	18	-6	5	18.57	16.79	18.50	17.24	15.23
6	8.185	08 58 37.15608	+54 18 59.4108	1443-0195273	134.654817	+54.316503	370	70	1976.0	0	0	2		16.43	18.90
7	8.551	08 58 36.25344	+54 18 50.0400	1443-0195263	134.651056	+54.313900	999	244	1972.6	0	0	2		16.31		17.18
8	9.100	08 58 37.23408	+54 19 00.8004	1443-0195274	134.655142	+54.316889	999	59	1972.6	0	0	2		14.61		17.04
9	9.890	08 58 35.52144	+54 18 50.8500	1443-0195256	134.648006	+54.314125	137	999	1972.6	0	0	2		17.00		17.57

%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 [****ClosingBrace(s)Inserted****]
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NOMAD1

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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 3.70808 58 35.897328+54 18 56.239921443-0200546..134.6495722+54.3156222B 0.0 0.0 0.0 0.018.140o    17.160B         2 4.86008 58 36.521328+54 19 02.700121443-0200553YM134.6521722+54.3174167B 0.0 0.0 0.0 0.016.420Y14.820Y 9.910B14.18213.41612.912   3 6.91808 58 36.105336+54 18 51.750001443-0200549..134.6504389+54.3143750B 0.0 0.0 0.0 0.018.480B    14.260B         4 7.26208 58 36.847344+54 18 53.780041443-0200557..134.6535306+54.3149389B 0.0 0.0 0.0 0.0        16.830B         5 7.83908 58 36.104664+54 18 50.820121443-0200548..134.6504361+54.3141167B 18.0 4.0 -6.0 11.018.500B    17.240B         6 8.18508 58 37.156008+54 18 59.410081443-0200560..134.6548167+54.3165028B 0.0 0.0 0.0 0.018.900B    16.430e         7 8.55108 58 36.253344+54 18 50.040001443-0200550..134.6510556+54.3139000B 0.0 0.0 0.0 0.0        17.180B         8 9.09908 58 37.234008+54 19 00.800041443-0200561..134.6551417+54.3168889B 0.0 0.0 0.0 0.0        17.040B         9 9.89008 58 35.521344+54 18 50.850001443-0200543..134.6480056+54.3141250B 0.0 0.0 0.0 0.0        17.570B         %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	4.151	08 58 36.61392	+54 19 00.9696	N9C0000028	134.652558	+54.316936	1991.110	10.10	12.13	18.19	16.42	3	20.72	0.22

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Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	PPMX	RAJ2000 deg	DEJ2000 deg	pmRA mas/yr	pmDE mas/yr	Cmag mag	Rmag mag	Jmag mag	Hmag mag	Kmag mag	Nobs	P	sub
1	4.376	08 58 36.50016	+54 19 02.2440	085836.5+541902	134.652084	+54.317290	-18.93	-11.80	14.480	16.481	14.183	13.417	12.912	2		O

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