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	8.194	17 17 18.82488	+33 27 46.8216	1200-08303526	259.328437	+33.463006			14.9	13.2	1954.509
2	10.097	17 17 19.04616	+33 27 32.8716	1200-08303557	259.329359	+33.459131			18.5	17.3	1954.509
3	11.037	17 17 19.13352	+33 27 31.5000	1200-08303574	259.329723	+33.458750			18.9	18.1	1954.509
4	14.619	17 17 19.20000	+33 27 27.6804	1200-08303587	259.330000	+33.457689			19.2	17.7	1954.509
5	15.711	17 17 19.20408	+33 27 26.5716	1200-08303589	259.330017	+33.457381			19.4	17.9	1954.509
6	18.029	17 17 17.92680	+33 27 43.5528	1200-08303366	259.324695	+33.462098			16.1	14.9	1954.509
7	18.455	17 17 18.60744	+33 27 58.0032	1200-08303477	259.327531	+33.466112			18.3	16.7	1954.509
8	20.530	17 17 18.60216	+33 28 00.3432	1200-08303476	259.327509	+33.466762			18.3	18.5	1954.509
9	22.300	17 17 18.54552	+33 28 01.9704	1200-08303463	259.327273	+33.467214			18.5	17.7	1954.509

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

%22>%5cFONT SIZE=-1magl_

rClass

rStel

rDiam
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bmag
magl_

bClass

bStel

bDiam
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magMflag

110.48917 17 18.57408+33 27 45.6912EO1132-0312229259.327392+33.46269211.99   2 13.39 28.5 0.1013.84   2 7.37 28.6 1.85   %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	8.335	17 17 18.82584	+33 27 47.0808	N101322210528	259.328441	+33.463078	1993.447	11.63	0.42	12.81	0.41	3	19.20	0.72
2	18.130	17 17 17.91840	+33 27 43.5024	N101322210430	259.324660	+33.462084	1993.447	15.36	0.42	15.91	0.41	0	3.78	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"	_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	5.805	17 17 18.93216	+33 27 40.0104	1234-0275419	259.328884	+33.461114	354	585	1973.9	0	0	2	18.38				15.31
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%3cEM%3e1&%3cFONT%20COLOR=%27#CD5B45%27>%205.805&%3cFONT%20COLOR=%27#CD5B45%27>17%2017%2018.93216&%3cFONT%20COLOR=%27#CD5B45%27>%2b33%2027%2040.0104&1234-0275419&259.328884&%2b33.461114&354&585&1973.9&%20%20%20%20%200&%20%20%20%20%200&2&18.38&%20&%20&%20&15.31%3cBR%3e">\Ahref='VizieR-5?-ref=VIZ663e92d911fc73&-out.add=.&-source=I/284/out&USNO-B1.0===1234-0275421&-out.orig=o' class='full'2 8.10617 17 19.00752+33 27 35.38081234-0275421259.329198+33.4598281299991973.9 0 02  17.72    16.37 3 8.28917 17 18.80880+33 27 46.69201234-0275418259.328370+33.462970 671131976.8 0 0514.9413.3812.6712.0612.70 4 9.37017 17 19.05744+33 27 33.60241234-0275422259.329406+33.4593342681371973.9 14 18419.2517.62  15.5217.23 510.10517 17 19.06608+33 27 32.76001234-0275423259.329442+33.4591002903641973.9 0 0419.3317.32  15.5017.00 611.17217 17 19.12416+33 27 31.39201234-0275424259.329684+33.4587202421571976.8 0 0519.5018.2516.8516.1817.12 714.95617 17 19.19280+33 27 27.35281234-0275425259.329970+33.4575981011031976.8 0 0519.8518.0417.3517.2317.14 815.56217 17 18.60600+33 27 54.50041234-0275416259.327525+33.4651395291991973.9 0 02  17.30    15.81 918.23417 17 17.91072+33 27 43.61041234-0275406259.324628+33.462114 69 301976.8 0 0516.0914.9515.8614.8214.84 1018.37717 17 19.25208+33 27 23.83201234-0275426259.330217+33.4566205389991993.4 0 02      20.6317.86 1119.04717 17 18.63336+33 27 58.87081234-0275417259.327639+33.4663539612231967.5 14 -34318.8318.75    15.83 1220.95317 17 18.59808+33 28 00.79321234-0275415259.327492+33.4668876985391967.5 2 58318.7416.72    16.28 1321.46417 17 18.49152+33 28 00.64201234-0275412259.327048+33.4668458548981978.8 2 -96319.46  16.83  18.43 1421.83617 17 18.57072+33 28 01.61041234-0275414259.327378+33.467114 894001976.8 0 0519.8817.7815.9016.1517.14 1522.63217 17 18.52680+33 28 02.22241234-0275413259.327195+33.4672847319991967.5 0 0319.0917.85    18.24 1628.92817 17 18.36744+33 28 08.26321234-0275411259.326531+33.4689622666791971.5 0 0220.66  19.52     %0a%0a%3cP%3e%0a%3cFONT%20SIZE=%27-1%27%3e%3cEM%3e%3cFONT%20COLOR=%27#0000FF%27>%3cB%3eNote:%20More%20recent%20versions%20available:%20UCAC3%20%28I/315%29%20and%20UCAC4%20%28I/322%29;%20see%20also%20the%20UCAC%20home%20page%20at%20http://ad.usno.navy.mil/ucac/%3cP%3e%0a

Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	2UCAC	RAJ2000 deg	e_ mas	DEJ2000 deg	e_ mas	UCmag mag	No	Nc	pmRA mas/yr	pmDE mas/yr	2Mkey	Jmag mag	Kmag mag
1	18.268	17 17 17.906136	+33 27 43.27200	43457241	259.3246089	40	+33.4620200	15	15.71	3	2	-22.5	-6.0	206785178	14.267	13.851

%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	[****ClosingBrace(s)Inserted****]
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mag&%">\BegDIVclass='sort-down ' </A>decHmag
magKmag
mag

R

1 5.80717 17 18.931992+33 27 40.010041234-0279736..259.3288833+33.4611139B 0.0 0.0 0.0 0.018.380o                 2 6.44017 17 18.858456+33 27 43.412041234-0279735.M259.3285769+33.4620589M 0.0 0.0 0.0 0.0            15.52613.17612.849   3 8.10817 17 19.007328+33 27 35.380081234-0279738..259.3291972+33.4598278B 0.0 0.0 0.0 0.0        17.720e         4 8.28917 17 18.808656+33 27 46.689841234-0279734YM259.3283694+33.4629694B 0.0 0.0 0.0 0.018.000Y    12.060B13.90913.16212.772   5 9.37317 17 19.057344+33 27 33.599881234-0279739..259.3294056+33.4593333B 14.0 8.0 18.0 4.019.250o    15.520B         610.10517 17 19.066008+33 27 32.760001234-0279740..259.3294417+33.4591000B 0.0 0.0 0.0 0.019.330o    15.500B         711.17517 17 19.123992+33 27 31.389841234-0279741..259.3296833+33.4587194B 0.0 0.0 0.0 0.016.850B    16.180B         814.95917 17 19.192656+33 27 27.349921234-0279742..259.3299694+33.4575972B 0.0 0.0 0.0 0.017.350B    17.230B         915.56117 17 18.606000+33 27 54.500041234-0279732..259.3275250+33.4651389B 0.0 0.0 0.0 0.0        17.300e         1018.26817 17 17.906136+33 27 43.272001234-0279722YM259.3246089+33.4620200C -22.5 5.4 -6.0 5.215.870Y14.920Y14.820B14.26713.98313.851   1118.37917 17 19.252008+33 27 23.829841234-0279743..259.3302167+33.4566194B 0.0 0.0 0.0 0.0        20.630B         1219.04717 17 18.633336+33 27 58.870081234-0279733..259.3276389+33.4663528B 14.0 25.0 -34.0 5.018.830o    18.750e         1320.95017 17 18.598008+33 28 00.789961234-0279731..259.3274917+33.4668861B 2.0 18.0 58.0 14.018.740o    16.720e         1421.46417 17 18.491328+33 28 00.639841234-0279728..259.3270472+33.4668444B 2.0 31.0 -96.0 32.016.830B                 1521.83617 17 18.570672+33 28 01.610041234-0279730..259.3273778+33.4671139B 0.0 0.0 0.0 0.015.900B    16.150B         1622.63017 17 18.526656+33 28 02.219881234-0279729..259.3271944+33.4672833B 0.0 0.0 0.0 0.019.090o    17.850e         1728.92617 17 18.367344+33 28 08.259961234-0279727..259.3265306+33.4689611B 0.0 0.0 0.0 0.019.520B                 %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	18.344	17 17 17.89968	+33 27 43.2036	171717.8+332743		259.324582	+33.462001	15.341	2	14.267	13.983	13.851

%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	8.337	17 17 18.82584	+33 27 47.0844	N3JE010528	259.328441	+33.463079	1993.447	11.63	12.81		12.06	3	19.20	0.72
2	18.127	17 17 17.91864	+33 27 43.5060	N3JE010430	259.324661	+33.462085	1993.447	15.36	15.91		14.68	0	3.78	0.08

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