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	3.721	23 05 18.17400	-34 27 10.3212	0525-44108181	346.325725	-34.452867			18.1	18.0	1982.657
2	9.463	23 05 18.97944	-34 27 02.5920	0525-44108280	346.329081	-34.450720			11.2	12.2	1982.657

%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

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	9.78	23 05 18.9816	-34 27 02.196	0750900492	346.32909	-34.45061	0.5	14.36	0.43	0	3	1984.638

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

%22>"h:m:s" ">\BegDIVclass='sort-down ' </A>string _DEJ2000
"d:m:s"USNO-B1.0

RAJ2000
degDEJ2000
dege_RAJ2000
mase_DEJ2000
masEpoch
yrpmRA
mas/yrpmDE
mas/yrNdet

B1mag
magR1mag
magB2mag
magR2mag
magImag
mag 1 2.31423 05 18.36072-34 27 11.53080555-0892375346.326503-34.4532039997801992.3 0 03    19.8218.6418.51 2 3.29723 05 18.21288-34 27 10.52280555-0892372346.325887-34.4529236094931987.3 0 03  19.2918.9318.49   3 3.33023 05 18.47400-34 27 06.32160555-0892377346.326975-34.4517566403891993.6 314 2563    20.8217.0317.32 4 3.33123 05 18.73008-34 27 08.79120555-0892380346.328042-34.452442 353741992.3 228 5083    20.6118.2317.91 5 3.50723 05 18.23808-34 27 11.67120555-0892373346.325992-34.4532424177301988.6 -8 -1623  18.6220.2418.40   6 4.30623 05 18.27072-34 27 06.12000555-0892374346.326128-34.4517005079991990.6 0 02    20.1016.76   7 5.75623 05 18.76008-34 27 05.15160555-0892381346.328167-34.4514318069311990.3 208 124  18.1019.1916.2117.34 8 9.67423 05 18.95280-34 27 02.04120555-0892385346.328970-34.450567 851311990.3 -44 44  12.2212.3211.2112.17 %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	2.314	23 05 18.360672	-34 27 11.53008	0555-0986026	..	346.3265028	-34.4532028	B	0.0	0.0	0.0	0.0	19.820	B			18.640	B
2	3.298	23 05 18.212664	-34 27 10.51992	0555-0986023	..	346.3258861	-34.4529222	B	0.0	0.0	0.0	0.0	18.930	B			18.490	B
3	3.330	23 05 18.730008	-34 27 08.79012	0555-0986031	..	346.3280417	-34.4524417	B	228.0	3.0	508.0	33.0	20.610	B			18.230	B
4	3.332	23 05 18.474000	-34 27 06.32016	0555-0986028	..	346.3269750	-34.4517556	B	314.0	70.0	256.0	42.0	20.820	B			17.030	B
5	3.508	23 05 18.238008	-34 27 11.67012	0555-0986024	..	346.3259917	-34.4532417	B	-8.0	32.0	-162.0	57.0	20.240	B			18.400	B
6	4.306	23 05 18.270672	-34 27 06.12000	0555-0986025	..	346.3261278	-34.4517000	B	0.0	0.0	0.0	0.0	20.100	B			16.760	B
[****ClosingBrace(s)Inserted****]
6	4.306	23 05 18.270672	-34 27 06.12000	0555-0986025	..	346.3261278	-34.4517000	B	0.0	0.0	0.0	0.0	20.100	B			16.760	B

%22>\Ahref='VizieR-5?-ref=VIZ66396e4a2ea8fe&-out.add=.&-source=I/297/out&NOMAD1===0555-0986032' class='full'7 5.75723 05 18.760008-34 27 05.150160555-0986032..346.3281667-34.4514306B 208.0 71.0 12.0 82.019.190B    16.210B         8 9.67423 05 18.952656-34 27 02.040120555-0986036YM346.3289694-34.4505667B -44.0 7.0 4.0 11.017.440Y15.470Y11.210B15.20114.52214.099   %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	2.044	23 05 18.38448	-34 27 11.4012	346.326602	-34.453167	135.0	18.7				19.82		18.64	18.51	3	0
2	3.167	23 05 18.45984	-34 27 06.4872	346.326916	-34.451802	318.6	264.5				20.82		17.03	17.32	3	0
3	3.302	23 05 18.22320	-34 27 10.9116	346.325930	-34.453031	38.6	-22.9				18.93	19.29	18.49		3	0
4	3.391	23 05 18.73824	-34 27 08.9568	346.328076	-34.452488	244.5	513.9				20.61		18.23	17.91	3	0
5	3.540	23 05 18.29304	-34 27 06.8688	346.326221	-34.451908	62.3	-114.5				20.10		16.76		2	0
6	3.564	23 05 18.24888	-34 27 11.9376	346.326037	-34.453316	17.8	-171.5				20.24	18.62	18.40		3	0
7	5.779	23 05 18.75864	-34 27 05.1084	346.328161	-34.451419	232.9	20.7				19.19	18.10	16.21	17.34	4	0

%0a%0a%3cP%3e%0a%3cFONT%20SIZE=%27-1%27%3e%3cEM%3e%3cFONT%20COLOR=%27#0000FF%27>%3cB%3eNote:%20%3cP%3e%0a

Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 [****ClosingBrace(s)Inserted****]
">

%3cEM%3e%20%3cFONT%20COLOR=%27#CD5B45%27>_DEJ2000

%20

%22>%5cFONT SIZE=-1"d:m:s"RAJ2000
deg

DEJ2000
deg

e_RAJ2000
(...)

e_DEJ2000
arcsec

magBJ
mag

e_
mag

magRF
mag

e_
mag

magG
mag

e_
mag

magGrvs
mag

e_
mag

alphaEpoch
yr

deltaEpoch
yr

pmRA
mas/yr

e_
(...)

pmDE
mas/yr

e_
(...)

1 2.04423 05 18.38448-34 27 11.4006346.326602-34.453167 0.133 0.13319.820 0.40018.640 0.40018.870 0.40017.918 0.5001992.31001992.3100 135.0 16.1 18.7 16.1 2 3.16723 05 18.45989-34 27 06.4868346.326916-34.451802 0.133 0.13320.820 0.40017.030 0.40015.981 0.40013.869 0.5001993.61001993.6100 318.6 20.5 264.5 20.5 3 3.30123 05 18.22323-34 27 10.9118346.325930-34.453031 0.133 0.13318.930 0.40018.490 0.40018.593 0.40018.175 0.5001987.30001987.3000 38.6 19.7 -22.9 19.7 4 3.39123 05 18.73827-34 27 08.9570346.328076-34.452488 0.133 0.13320.610 0.40018.230 0.40018.306 0.40016.639 0.5001992.31001992.3100 244.5 16.1 513.9 16.1 5 3.54023 05 18.29304-34 27 06.8692346.326221-34.451908 0.163 0.16320.100 0.40016.760 0.40016.209 0.40014.181 0.5001990.62001990.6200 62.3 27.2 -114.5 27.2 6 3.56423 05 18.24886-34 27 11.9379346.326037-34.453316 0.133 0.13320.240 0.40018.400 0.40018.615 0.40017.240 0.5001988.64001988.6400 17.8 23.2 -171.5 23.2 7 5.77923 05 18.75864-34 27 05.1080346.328161-34.451419 0.115 0.11519.190 0.40016.210 0.40015.958 0.40014.039 0.5001990.39001990.3900 232.9 19.8 20.7 19.8 %0a%0a%0a%3cP%3e%0a%3cFONT%20SIZE=%27-1%27%3e%3cEM%3e%3cFONT%20COLOR=%27#0000FF%27>%3cB%3eNote:%20%3cP%3e%0a

Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	RAJ2000 deg	DEJ2000 deg	ipix	comp	pmRA mas/yr	pmDE mas/yr	Jmag mag	Hmag mag	Kmag mag	B1mag mag	B2mag mag	R1mag mag	R2mag mag	Imag mag	GaiaId	Gmag mag	Clone	Nosc
1	3.249	23 05 18.731411064	-34 27 09.34478280	346.3280475461	-34.4525957730	1279634995828254599		236.533	477.680					20.61		18.23	17.91	6554640712451885952	18.707	1	1

%0a%0a

Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	GSC2	RA_ICRS deg	DE_ICRS deg	objID	Epoch yr	Class	Gmag mag	OMag [****ClosingBrace(s)Inserted****]
">

OMag

%20

%22>%5cFONT SIZE=-1magBjmag
mag

Fpgmag
mag

Epgmag
mag

Npgmag
mag

Umag
mag

Bmag
mag

Vmag
mag

umag
mag

gmag
mag

rmag
mag

imag
mag

zmag
mag

ymag
mag

Jmag
mag

Hmag
mag

Ksmag
mag

Zmag
mag

Ymag
mag

W1mag
mag

W2mag
mag

W3mag
mag

W4mag
mag

FUVmag
mag

NUVmag
mag

a
pix

e
pix

PA
pix

1 2.13523 05 18.5522460938-34 27 07.775573730SBMB092826346.32730102539-34.45215988159 23223103928262013.0003                          19.848                               2 3.20023 05 18.3715972800-34 27 06.691211280SBMB052396346.32654832200-34.45185866980 23223103523962012.0003                    21.653    19.441       18.109                       3 3.55523 05 18.7573242188-34 27 09.670715332SBMB093295346.32815551758-34.45268630981 23223103932952013.0003                          19.470                               4 4.38423 05 18.8232421875-34 27 09.299926758SBMB095777346.32843017578-34.45258331299 23223103957772013.0003                          20.314                               5 4.58323 05 18.4864864800-34 27 14.230240200SBMB068320346.32702702700-34.45395284450 23223103683202012.0003                                 19.695                         6 4.91023 05 18.2812500000-34 27 05.331115723SBMB096572346.32617187500-34.45148086548 23223103965722013.0003                    24.198                                     7 5.13823 05 18.0548205600-34 27 09.454071600SBMB016502346.32522841900-34.45262613100 23223103165022012.0003                                   19.302                       8 5.34323 05 18.8525390625-34 27 07.171325684SBMB092817346.32855224609-34.45199203491 23223103928172013.0003                    23.143                                     9 6.91723 05 18.6108398437-34 27 16.344909668SBMB093790346.32754516602-34.45454025269 23223103937902013.0003                    21.58022.122                                   10 7.06023 05 18.6254882812-34 27 02.859191895SBMB091104346.32760620117-34.45079421997 23223103911042013.0003                    22.566                                     11 7.31323 05 18.3178710938-34 27 02.584533691SBMB090795346.32632446289-34.45071792603 23223103907952013.0003                          19.960                               12 7.64423 05 18.2525872800-34 27 16.806816000SBMB036371346.32605244700-34.45466856000 23223103363712012.0003                               20.409 19.830  21.120 20.672                   13 8.57223 05 17.9003906250-34 27 04.768066406SBMB091509346.32458496094-34.45132446289 23223103915092013.0003                    22.942                                     14 9.97923 05 19.0139910685-34 27 02.275980216SBMB000147346.32919162000-34.45060960000 232231031472014.5483    12.42820012.296100  12.712600      17.30915.24815.12617.20015.208   15.571 14.908 14.59416.442 16.077             15.249 0.278139.4 %0a%0a%0a%0a

Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	RAJ2000 deg	e_ 10-5deg	DEJ2000 deg	e_ 10-5deg	mag mag	e_ mag	emag mag	Nobs	N1	Ndet	flag
1	7.59	23 05 17.8560	-34 27 09.648	346.32440	117	-34.45268	105	14.780	0.125	0.176	17	18	18	0

%0a%0a%0a%3cP%3e%0a%3cFONT%20SIZE=%27-1%27%3e%3cEM%3e%3cFONT%20COLOR=%27#0000FF%27>%3cB%3eNote:%20%3cP%3e%0a

Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	RAJ2000 deg	DEJ2000 deg	Name	Mclass	E(B-V)	Zpmag mag	Zperrbits	Ypmag mag	Yperrbits	Jpmag mag	Jerrbits	Hpmag mag	Hperrbits [****ClosingBrace(s)Inserted****]
">

Hperrbits

%20

%22>Kspmag
mag

Ksperrbits

1 3.2023 05 18.3716-34 27 06.691346.32655-34.45186VIKING J230518.37-342706.69 1 0.0204   0   0  -1   019.8423 16 2 4.5823 05 18.4865-34 27 14.230346.32703-34.45395VIKING J230518.48-342714.23 1 0.0204   0   0  -118.5422 0   0 3 5.1423 05 18.0548-34 27 09.454346.32523-34.45263VIKING J230518.05-342709.45 1 0.0204   0   0  -1   018.3453 0 4 7.6423 05 18.2526-34 27 16.807346.32605-34.45467VIKING J230518.25-342716.80 1 0.020421.8224 16 19.0004 018.7753 018.9956 0   0 %0a%0a%3cP%3e%0a%3cFONT%20SIZE=%27-1%27%3e%3cEM%3e%3cFONT%20COLOR=%27#0000FF%27>%3cB%3eNote:%20%3cP%3e%0a

Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	RAJ2000 deg	DEJ2000 deg	objID	f_objID	Qual	e_RAJ2000 (...)	e_DEJ2000 arcsec	Epoch d	Ns	Nd	gmag mag	e_ mag	gKmag mag	e_ mag	gFlags	rmag mag	e_ mag	rKmag mag	e_ mag	rFlags	imag mag	e_ mag	iKmag mag	e_ mag	iFlags	zmag mag	e_ mag	zKmag mag	e_ mag	zFlags [****ClosingBrace(s)Inserted****]
zFlags ">
	ymag mag	e_ mag	yKmag mag	e_ mag	yFlags
1	9.979	23 05 19.00598880	-34 27 02.1945600	346.329191620	-34.450609600	66653463292189601	394584064	47	0.0094	0.1115	56905.547881940	0	14	15.2480				4	15.1260				4	17.1996	0.0408	15.2777	0.0316	16777496	15.2080				4	15.2500				4

%0a%0a%3cP%3e%0a%3cFONT%20SIZE=%27-1%27%3e%3cEM%3e%3cFONT%20COLOR=%27#0000FF%27>%3cB%3eNote:%20%3cP%3e%0a