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	3.870	21 08 18.40008	+17 09 58.7304	1050-19231372	317.076667	+17.166314			18.8	18.9	1954.520
2	18.745	21 08 19.58136	+17 10 02.5608	1050-19231847	317.081589	+17.167378			18.8	17.5	1954.520
3	22.485	21 08 17.85216	+17 10 15.9924	1050-19231162	317.074384	+17.171109			16.6	15.8	1954.520
4	23.830	21 08 19.92936	+17 09 45.9000	1050-19232012	317.083039	+17.162750			19.9	17.9	1954.520
5	24.087	21 08 19.72272	+17 09 40.2120	1050-19231917	317.082178	+17.161170			16.0	15.2	1954.520

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

l_

%22>bClass

bStel

bDiam
arcsecb-r
magMflag

1 3.96621 08 18.41400+17 09 58.8132EO1141-0391254317.076725+17.16633718.60  -1 -0.01 6.4 0.0522.21L 0     3.61   218.91521 08 19.59408+17 10 02.5716EO1141-0391173317.081642+17.16738117.25  -1 -1.20 7.6 0.0819.30  -1 0.35 7.2 2.05   322.36821 08 17.85672+17 10 15.8916EO1141-0390851317.074403+17.17108115.46  -1 1.07 10.7 0.1016.06   2 26.57 27.7 0.60* 424.14821 08 19.75800+17 09 40.7916EO1141-0391702317.082325+17.16133114.38   2 9.11 15.3 0.3715.94   2 4.67 13.4 1.56   %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	3.738	21 08 18.40608	+17 09 58.5936	N03133122562	317.076692	+17.166276	1992.648	18.47	0.44	18.92	0.44	3	2.65	0.09
2	18.649	21 08 19.58064	+17 10 02.3484	N03133122628	317.081586	+17.167319	1991.541	17.26	0.43	18.89	0.44	3	2.77	0.02
3	22.246	21 08 17.82672	+17 10 15.6000	N03133122795	317.074278	+17.171000	1991.541	15.47	0.43	16.39	0.43	3	4.87	0.35
4	24.399	21 08 19.71144	+17 09 39.5028	N03133122434	317.082131	+17.160973	1991.541	15.07	0.43	15.99	0.43	0	3.68	0.04
5	24.412	21 08 19.94208	+17 09 44.8452	N03133122435	317.083092	+17.162457	1991.541	18.00	0.44			3	2.57	0.07

%0a%0a

Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	ID	RAJ2000 "h:m:s"	DEJ2000 "d:m:s"	Vmag mag	o_RAs	o_DEs
1	24.345	21 08 19.704133	+17 09 39.46000	7ER32971	21 08 19.7041	+17 09 39.460	15.619	2	3

%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%0a%5b%2a%2a%2a%2aClosingBrace%28s%29Inserted%2a%2a%2a%2a%5d">Note: The USNO-B Catalog presents positions, proper motions, magnitudes un blue, red and infrared, as well as star/galaxy estimators for 1,045,175,762 objects derived from 3,648,832,040 separate observations. The data were taken from scans of 7,435 Schmidt plates taken from various sky surveys during the last 50 years.
USNO-B1.0 catalog was created by Dave Monet and collaborators at http://www.nofs.navy.mil/data/fchpix/
Note that the star/galaxy estimators may be mixed up in dense regions.

">\TABULARCELLPADDING=5 CELLSPACING=2 class='tablist Vbgcol2'Lp0.80Full

_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 3.72021 08 18.38352+17 09 58.58281071-0664865317.076598+17.166273 97 901977.5 0 0519.7119.0319.2418.4518.54 2 6.10221 08 18.30288+17 10 00.84001071-0664864317.076262+17.1669006409991992.1 0 02    19.7919.66   3 6.11321 08 18.10944+17 09 59.48281071-0664860317.075456+17.1665236359991992.1 0 02    19.0219.09   410.34721 08 17.68752+17 09 57.32281071-0664849317.073698+17.165923 30 01979.2 -58 -158320.80  20.6019.99   511.04921 08 17.65944+17 09 58.44241071-0664848317.073581+17.166234 425901991.0 0 02    21.6319.78   614.68121 08 17.89680+17 10 07.74121071-0664855317.074570+17.1688172587541983.3 0 0420.97  20.4318.4418.88 715.57321 08 17.92872+17 10 08.97241071-0664858317.074703+17.1691595329991979.6 0 03  19.4719.6719.29   817.70521 08 17.82408+17 10 10.61041071-0664852317.074267+17.1696148169991991.6 0 02    20.9617.44   917.88021 08 17.91288+17 10 11.39161071-0664856317.074637+17.169831329 451973.0 0 02  19.43  18.16   1018.79521 08 19.58136+17 10 02.68321071-0664880317.081589+17.167412139 201977.5 6 4519.7117.1918.9417.0717.04 1122.12921 08 19.73952+17 09 44.14321071-0664884317.082248+17.1622629996091973.0 0 02  17.01  16.31   1222.45721 08 17.82936+17 10 15.84121071-0664853317.074289+17.171067 94 151977.5 0 0517.2215.4617.0515.5715.49 1323.87421 08 19.90800+17 09 45.07201071-0664890317.082950+17.162520 604581977.5 0 0521.0317.7220.0016.8816.77 1424.09121 08 19.71552+17 09 40.07161071-0664883317.082148+17.161131145 371977.5 0 0516.5214.8816.4515.0514.91

[****ClosingBrace(s)Inserted****]1424.09121 08 19.71552+17 09 40.07161071-0664883317.082148+17.161131145 371977.5 0 0516.5214.8816.4515.0514.91%22>\EndTABLESORT

Note: More recent versions available: UCAC3 (I/315) and UCAC4 (I/322); see also the UCAC home page at http://ad.usno.navy.mil/ucac/

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	24.525	21 08 19.716144	+17 09 39.38616	37990005	317.0821506	54	+17.1609406	78	15.61	3	2	7.4	-10.9	353991156	14.044	13.471

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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****]
">

mag&%">\BegDIVclass='sort-down ' </A>decHmag
magKmag
mag

R

1 3.71721 08 18.383328+17 09 58.579921071-0698760..317.0765972+17.1662722B 0.0 0.0 0.0 0.019.240B    18.450B         2 6.10221 08 18.302664+17 10 00.840001071-0698759..317.0762611+17.1669000B 0.0 0.0 0.0 0.019.790B    19.660B         3 6.11121 08 18.109344+17 09 59.479921071-0698755..317.0754556+17.1665222B 0.0 0.0 0.0 0.019.020B    19.090B         410.34921 08 17.687328+17 09 57.319921071-0698744..317.0736972+17.1659222B -58.0 1.0 -158.0 0.020.600B    19.990B         511.04921 08 17.659344+17 09 58.439881071-0698743..317.0735806+17.1662333B 0.0 0.0 0.0 0.021.630B    19.780B         614.68121 08 17.896656+17 10 07.740121071-0698750..317.0745694+17.1688167B 0.0 0.0 0.0 0.020.430B    18.440B         715.57121 08 17.928672+17 10 08.969881071-0698753..317.0747028+17.1691583B 0.0 0.0 0.0 0.019.670B    19.290B         817.70521 08 17.824008+17 10 10.610041071-0698747..317.0742667+17.1696139B 0.0 0.0 0.0 0.020.960B    17.440B         917.88021 08 17.912664+17 10 11.390161071-0698751..317.0746361+17.1698306B 0.0 0.0 0.0 0.0        18.160B         1018.79421 08 19.581336+17 10 02.679961071-0698775YM317.0815889+17.1674111B 6.0 4.0 4.0 0.018.110Y17.680Y17.070B16.03915.36915.173   1122.12821 08 19.739328+17 09 44.139961071-0698779..317.0822472+17.1622611B 0.0 0.0 0.0 0.0        16.310B         1222.45621 08 17.829336+17 10 15.840121071-0698748YM317.0742889+17.1710667B 0.0 0.0 0.0 0.018.350Y    15.570B14.39713.86413.772   1323.87521 08 19.908000+17 09 45.069841071-0698785YM317.0829500+17.1625194B 0.0 0.0 0.0 0.018.160Y    16.880B16.01215.45515.226   1424.52521 08 19.716144+17 09 39.386161071-0698778YM317.0821506+17.1609406C 7.3 5.5 -10.9 6.015.760Y15.470Y15.050B14.04413.51313.471   %0a%0a

Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	PM2000	RAJ2000 "h:m:s"	DEJ2000 "d:m:s"	pmRA mas/yr	pmDE mas/yr	Vmag mag	EpRA yr	EpDE yr	2MASS	TYC1	TYC2	TYC3
1	24.310	21 08 19.698716	+17 09 39.29328	2457491	21 08 19.7023	+17 09 39.483	-4.7	-17.2	15.695	1988.97	1989.35	21081971+1709394

%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	22.344	21 08 17.82648	+17 10 15.7044	210817.8+171015		317.074277	+17.171029	15.776	2	14.398	13.864	13.773
2	24.461	21 08 19.71048	+17 09 39.3876	210819.7+170939		317.082127	+17.160941	15.400	2	14.044	13.513	13.471

%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