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	7.387	07 55 38.62488	+21 25 53.7204	1050-05477475	118.910937	+21.431589			12.8	11.3	1950.936
2	7.565	07 55 38.93280	+21 26 05.3700	1050-05477514	118.912220	+21.434825			18.0	16.7	1950.936
3	8.833	07 55 38.93280	+21 26 07.2816	1050-05477513	118.912220	+21.435356			18.8	17.2	1950.936

%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	7.77	07 55 38.6256	+21 25 53.328	0137501696	118.91094	+21.43148	0.2	15.25	0.40	1	3	02UF	1983.034

%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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degDEJ2000
degPosErr
arcsecPmag
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magn_

Class

Epoch
yr 1 7.7607 55 38.6232+21 25 53.3280137501696118.91093+21.43148 0.215.28 0.40 131983.034 %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	7.488	07 55 38.65944	+21 25 53.7528	EO0226-0413726	118.911081	+21.431598	10.54		1	29.15	39.8	0.62	12.70		1	23.56	38.7	2.16

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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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e

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%22> 1 8.24207 55 38.66736+21 25 52.9968N2312001518118.911114+21.4313881997.17911.42 0.4312.32 0.413 16.54 0.63 %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	3.905	07 55 38.76672	+21 25 59.8800	1114-0164057	118.911528	+21.433300	474	9	1950.0	0	0	2		14.89			14.87
2	4.553	07 55 38.82216	+21 26 00.6720	1114-0164060	118.911759	+21.433520	257	135	1982.3	16	-20	3		16.24		14.80	14.75
3	4.961	07 55 38.74944	+21 25 57.4032	1114-0164056	118.911456	+21.432612	432	684	1974.9	0	0	2	16.11				13.38
4	5.034	07 55 38.81352	+21 26 03.2820	1114-0164059	118.911723	+21.434245	209	249	1974.4	0	0	2		16.49		16.63
5	7.349	07 55 38.63400	+21 25 53.7924	1114-0164054	118.910975	+21.431609	142	296	1979.1	0	0	5	13.23	11.31	11.85	10.97	11.21
6	7.516	07 55 38.86536	+21 26 06.3600	1114-0164062	118.911939	+21.435100	343	999	1982.3	-40	12	3	18.73		16.21	17.31
7	8.069	07 55 38.94744	+21 26 05.9316	1114-0164064	118.912281	+21.434981	347	641	1950.0	0	0	4	18.45	16.67		16.30	17.74
8	9.414	07 55 39.16944	+21 26 01.4532	1114-0164069	118.913206	+21.433737	463	100	1950.0	0	0	4		16.76	18.72	17.07	17.56

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Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	NOMAD1	YM	RAJ2000 [****ClosingBrace(s)Inserted****]
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RAJ2000

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%22>%5cFONT SIZE=-1degDEJ2000
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r

pmRA
mas/yr

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pmDE
mas/yr

e_
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Bmag
mag

r_

Vmag
mag

r_

Rmag
mag

r_

Jmag
mag

Hmag
mag

Kmag
mag

R

1 3.90507 55 38.766672+21 25 59.880001114-0169847..118.9115278+21.4333000B 0.0 0.0 0.0 0.0        14.890e         2 4.55007 55 38.821992+21 26 00.669841114-0169850..118.9117583+21.4335194B 16.0 9.0 -20.0 4.0        14.800B         3 4.96207 55 38.749344+21 25 57.399961114-0169846YM118.9114556+21.4326111B 0.0 0.0 0.0 0.017.910o        15.91614.19213.721   4 5.03007 55 38.813328+21 26 03.279841114-0169849..118.9117222+21.4342444B 0.0 0.0 0.0 0.0        16.630B         5 7.35207 55 38.634000+21 25 53.789881114-0169844YM118.9109750+21.4316083B 0.0 0.0 0.0 0.017.040Y16.190Y10.970B15.27914.53214.409   6 7.51607 55 38.865336+21 26 06.360001114-0169852..118.9119389+21.4351000B -40.0 12.0 12.0 46.016.210B    17.310B         7 8.06707 55 38.947344+21 26 05.930161114-0169854..118.9122806+21.4349806B 0.0 0.0 0.0 0.018.450o    16.300B         8 9.41207 55 39.169344+21 26 01.449961114-0169859YM118.9132056+21.4337361B 0.0 0.0 0.0 0.017.770Y17.890Y17.070B16.31015.90915.631   %0a%0a%3cP%3e%0a%3cFONT%20SIZE=%27-1%27%3e%3cEM%3e%3cFONT%20COLOR=%27#0000FF%27>%3cB%3eNote:%20Zone%20-30/%2b50deg%3cP%3e%0a

Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	CMC14	f_	RAICRS deg	DEICRS deg	r'mag mag	Nt	Jmag mag	Hmag mag	Ksmag mag
1	8.541	07 55 38.58336	+21 25 52.4316	075538.5+212552		118.910764	+21.431231	16.264	2

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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	8.240	07 55 38.66760	+21 25 53.0004	N8ZL000518	118.911115	+21.431389	1997.179	11.42	12.32	13.07	11.96	3	16.54	0.63

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