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	5.848	10 34 39.80688	+53 58 20.7624	1425-07517360	158.665862	+53.972434			17.3	17.1	1955.120
2	22.718	10 34 41.19336	+53 58 08.8608	1425-07517424	158.671639	+53.969128			16.0	14.6	1955.120
3	23.130	10 34 37.11144	+53 58 09.6204	1425-07517228	158.654631	+53.969339			20.2	19.4	1955.076
4	27.705	10 34 38.03208	+53 58 49.0728	1425-07517274	158.658467	+53.980298			19.5	19.2	1955.120

%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	23.86	10 34 41.3016	+53 58 08.220	0381600299	158.67209	+53.96895	0.2	14.54	0.40	1	0	01AM	1984.167
2	24.05	10 34 41.3160	+53 58 08.076	0381600299	158.67215	+53.96891	0.2	14.72	0.40	6	0	01RP	1984.889

%0a%22>ts_init('!ext/gsc1.2.exe_2');">\Endscript

Note: The GSC-ACT (or GSC1.3) is a recalibration of the GSC1.1, the catalogue constructed to support the operational need of the Hubble Space Telescope, with the ACT, the combination of the Astrographic Catalogue and the Tycho catalogue derived from the Hipparcos mission; see http://www.projectpluto.com/gsc_act.htm for more details about this recalibration.

Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	GSC	RAJ2000 deg	DEJ2000 deg	PosErr arcsec	Pmag mag	e_ mag	n_	Class	Epoch yr
1	24.11	10 34 41.3112	+53 58 07.932	0381600299	158.67213	+53.96887	0.2	14.74	0.40	6	0	1984.889
2	24.23	10 34 41.3520	+53 58 08.184	0381600299	158.67230	+53.96894	0.2	14.56	0.40	1	0	1984.167

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

Mflag

%22> 1 5.79910 34 39.81480+53 58 21.0216EO0673-0101635158.665895+53.97250616.79   1 11.03 11.5 0.2417.44   1 8.48 13.2 0.65   2 5.86510 34 39.82800+53 58 21.1224EO1331-0118809158.665950+53.97253416.70   1 16.80 11.1 0.1417.59   1 14.41 12.5 0.89   316.80210 34 37.39200+53 58 18.5808EO0673-0101649158.655800+53.97182819.95   1 2.77 3.5 0.3221.67L 0     1.72   422.39310 34 41.16552+53 58 09.0732EO0673-0101829158.671523+53.96918713.82  -1 -0.15 12.5 0.0415.94  -1 -1.19 11.5 2.12   522.80210 34 41.20200+53 58 08.8212EO1331-0118998158.671675+53.96911713.13  -1 -0.75 13.3 0.0215.61  -1 -0.11 12.1 2.48   623.12510 34 37.08072+53 58 10.0020EO1331-0119023158.654503+53.96944519.57  -1 0.65 4.1 0.1121.44   1 2.19 4.3 1.87   723.37110 34 36.94608+53 58 35.4612EO1331-0118613158.653942+53.97651720.00L 0      21.76   1 2.32 3.5 1.76   823.63810 34 37.02480+53 58 09.8112EO0673-0101779158.654270+53.96939219.63  -1 0.29 3.7 0.1821.67L 0     2.04   927.10010 34 38.02488+53 58 48.3924EO1331-0118378158.658437+53.98010918.87   1 2.49 6.2 0.2521.01   1 5.88 6.7 2.14   1027.60810 34 38.03808+53 58 48.9900EO0673-0101234158.658492+53.98027518.94  -1 0.37 5.1 0.2320.62   1 2.23 5.5 1.68   %0a%0a%3cP%3e%0a%3cFONT%20SIZE=%27-1%27%3e%3cEM%3e%3cFONT%20COLOR=%27#0000FF%27>%3cB%3eNote:%20The%20construction%20of%20the%20%0a%3cB%3eGSC-II%20%0ais%20still%20in%20progress:%20this%0aversion%20has%20no%20proper%20motions,%20and%20the%20magnitude%20limits%20are%2018.5%20in%20F%20%28red%29%0aand%2019.5%20in%20J%20%28blue%29.%20The%20data%20are%20%3cB%3e%3cFONT%20COLOR=%27#0000CD%27>copyrighted,%20check%20%0athe%20%3cB%3edata%20use%20Policy.%0a%3cP%3e%0a

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	6.227	10 34 39.85320	+53 58 20.7336	N21221011571	158.666055	+53.972426	1998.299	16.85	0.43	16.89	0.41	3	4.27	0.26
2	24.585	10 34 41.34192	+53 58 07.5180	N2122101183	158.672258	+53.968755	1998.299	14.01	0.42	15.87	0.40	0	4.10	0.04

%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	5.586	10 34 39.66936	+53 58 19.5132	1439-0206826	158.665289	+53.972087	999	999	1976.0	0	0	2	17.76				18.53
[****ClosingBrace(s)Inserted****]
">

%3cEM%3e1&%3cFONT%20COLOR=%27#CD5B45%27>%205.586&%3cFONT%20COLOR=%27#CD5B45%27>10%2034%2039.66936&%3cFONT%20COLOR=%27#CD5B45%27>%2b53%2058%2019.5132&1439-0206826&158.665289&%2b53.972087&999&999&1976.0&%20%20%20%20%200&%20%20%20%20%200&2&17.76&%20&%20&%20&18.53%3cBR%3e">\Ahref='VizieR-5?-ref=VIZ6644291d2e802d&-out.add=.&-source=I/284/out&USNO-B1.0===1439-0206827&-out.orig=o' class='full'2 6.15010 34 39.84600+53 58 20.78041439-0206827158.666025+53.972439 91 831980.5 0 0517.3116.9016.0716.4917.51 317.29610 34 37.34136+53 58 18.35041439-0206820158.655589+53.971764270 51955.0 0 0221.0519.98       420.56810 34 37.21872+53 58 34.02121439-0206819158.655078+53.9761179999991955.0 0 0220.9619.78       523.49110 34 37.06536+53 58 09.56281439-0206818158.654439+53.9693232272321976.4 0 0420.7619.9821.1219.68   624.50510 34 41.34552+53 58 07.68001439-0206830158.672273+53.968800 15 851980.5 26 -20515.7613.8015.7314.0113.10 725.30010 34 41.42808+53 58 07.31281439-0206832158.672617+53.9686989999991955.0 0 0220.4013.99       826.96010 34 38.06352+53 58 48.38161439-0206823158.658598+53.980106 992361980.5 8 -14520.5819.7720.6419.0118.57 927.51210 34 38.34216+53 58 49.82161439-0206824158.659759+53.9805069999991955.0 0 0220.4619.74       %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	5.588	10 34 39.669336	+53 58 19.50996	1439-0213623	..	158.6652889	+53.9720861	B	0.0	0.0	0.0	0.0	17.760	o
2	6.150	10 34 39.846000	+53 58 20.78004	1439-0213624	..	158.6660250	+53.9724389	B	0.0	0.0	0.0	0.0	16.070	B			16.490	B
3	17.297	10 34 37.341336	+53 58 18.35004	1439-0213617	..	158.6555889	+53.9717639	B	0.0	0.0	0.0	0.0	21.050	o			19.980	e
4	20.568	10 34 37.218672	+53 58 34.02012	1439-0213616	..	158.6550778	+53.9761167	B	0.0	0.0	0.0	0.0	20.960	o			19.780	e
5	23.493	10 34 37.065336	+53 58 09.55992	1439-0213615	..	158.6544389	+53.9693222	B	0.0	0.0	0.0	0.0	21.120	B			19.680	B
6	24.504	10 34 41.345328	+53 58 07.68000	1439-0213627	YM	158.6722722	+53.9688000	B	26.0	0.0	-20.0	3.0	15.730	Y	14.380	Y	14.010	B	12.603	12.007	11.848
[****ClosingBrace(s)Inserted****]
6	24.504	10 34 41.345328	+53 58 07.68000	1439-0213627	YM	158.6722722	+53.9688000	B	26.0	0.0	-20.0	3.0	15.730	Y	14.380	Y	14.010	B	12.603	12.007	11.848

%22>\Ahref='VizieR-5?-ref=VIZ6644291d2e802d&-out.add=.&-source=I/297/out&NOMAD1===1439-0213629' class='full'725.30210 34 41.428008+53 58 07.309921439-0213629..158.6726167+53.9686972B 0.0 0.0 0.0 0.020.400o    13.990e         826.95910 34 38.063328+53 58 48.380161439-0213620.M158.6585972+53.9801056B 8.0 3.0 -14.0 8.020.640B    19.010B17.28616.11115.657   927.51110 34 38.341992+53 58 49.820161439-0213621..158.6597583+53.9805056B 0.0 0.0 0.0 0.020.460o    19.740e         %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	6.226	10 34 39.85320	+53 58 20.7372	N7M9001571	158.666055	+53.972427	1998.299	16.85	16.89	18.12	17.66	3	4.27	0.26
2	23.358	10 34 37.10112	+53 58 09.3612	N7M9004377	158.654588	+53.969267	1997.346		22.05			3	1.47	0.38
3	24.583	10 34 41.34192	+53 58 07.5216	N7M9000183	158.672258	+53.968756	1998.299	14.01	15.87	14.65	13.41	0	4.10	0.04
4	26.928	10 34 38.04912	+53 58 48.2952	N7M9001609	158.658538	+53.980082	1998.299	19.18	21.31			3	2.10	0.25

%0a%0a%3cP%3e%0a%3cFONT%20SIZE=%27-1%27%3e%3cEM%3e%3cFONT%20COLOR=%27#0000FF%27>%3cB%3eNote:%20%20The%20limiting%20magnitude%20is%20about%2015.2%20in%20the%20GSC%20photometric%20system.%3cP%3e%0a

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

Nobs

%20

%22>P

sub

124.58110 34 41.35056+53 58 07.6152103441.3+535807158.672294+53.968782 20.02 -27.2314.54014.39912.60412.00811.848 3  O %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	5.034	10 34 39.54528	+53 58 19.3008	158.664772	+53.972028	-27.9	-28.1			17.76				18.53	2	0
2	6.215	10 34 39.84936	+53 58 20.6904	158.666039	+53.972414	-1.3	-5.2			17.31	16.07	16.90	16.49	17.51	5	0
3	23.437	10 34 37.06584	+53 58 09.6492	158.654441	+53.969347	0.7	0.4			20.76	21.12	19.98	19.68		4	0
4	24.581	10 34 41.35056	+53 58 07.6152	158.672294	+53.968782	20.0	-27.2	12.604	11.848	14.54		14.40			3	10
5	26.867	10 34 38.09592	+53 58 48.3960	158.658733	+53.980110	11.5	-14.8	17.286	15.658	20.58	20.64	19.77	19.01	18.57	6	0

%0a%0a