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	4.161	00 39 52.58136	-38 03 48.7728	0450-00232598	009.969089	-38.063548			15.6	16.4	1979.760

%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	4.474	00 39 52.55808	-38 03 48.4884	S00101213684	009.968992	-38.063469	1989.658	17.64	0.42	17.06	0.31	3	5.19	0.08

%0a%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	[****ClosingBrace(s)Inserted****]
">

%22>arcsec ">\BegDIVclass='sort-down ' </A>string _RAJ2000
"h:m:s" _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 4.50000 39 52.88016-38 03 49.74120519-0005972009.970334-38.0638177256421983.4 164 -623  18.0615.98  18.51 2 5.03000 39 52.50288-38 03 48.05280519-0005971009.968762-38.0633485122051987.7 0 03  16.13  17.6018.38 3 6.02300 39 52.26672-38 03 48.47040519-0005970009.967778-38.0634641251301986.3 0 02  19.50    18.72 4 7.99000 39 52.03080-38 03 57.04200519-0005969009.966795-38.0658459999991983.1 -336 -5803  18.7819.9319.78   5 9.26400 39 53.04552-38 03 45.21240519-0005973009.971023-38.0625599994201983.6 0 02    17.6120.73   %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	4.500	00 39 52.879992	-38 03 49.74012	0519-0005989	..	009.9703333	-38.0638167	B	164.0	41.0	-62.0	36.0	15.980	B			18.060	e
2	5.034	00 39 52.502664	-38 03 48.04992	0519-0005988	..	009.9687611	-38.0633472	B	0.0	0.0	0.0	0.0					17.600	B
3	6.023	00 39 52.266672	-38 03 48.47004	0519-0005987	..	009.9677778	-38.0634639	B	0.0	0.0	0.0	0.0					19.500	e
4	7.991	00 39 52.030656	-38 03 57.03984	0519-0005986	..	009.9667944	-38.0658444	B	-336.0	99.0	-580.0	98.0	19.930	B			19.780	B
5	9.264	00 39 53.045328	-38 03 45.20988	0519-0005990	..	009.9710222	-38.0625583	B	0.0	0.0	0.0	0.0	17.610	B			20.730	B

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

&%">\BegDIVclass='sort-down ' </A>dec _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 4.47800 39 52.55832-38 03 48.4848S07T003684009.968993-38.0634681989.65817.6417.06    3 5.19 0.08 227.63300 39 53.02392-38 04 20.1180S07T009844009.970933-38.0722551987.904      17.990 2.00 0.36 %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	4.554	00 39 52.90224	-38 03 49.9428	009.970426	-38.063873	172.3	-68.7				15.98	18.06		18.51	3	0
2	7.546	00 39 52.84392	-38 03 45.8964	009.970183	-38.062749	-115.6	-42.2				17.61		20.73		2	0
3	7.808	00 39 52.05384	-38 03 57.1356	009.966891	-38.065871	-316.8	-592.4				19.93	18.78	19.78		3	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	e_RAJ2000 (...)	e_DEJ2000 arcsec	magBJ mag	e_ mag	magRF mag	e_ [****ClosingBrace(s)Inserted****]
">

e_

%20

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

e_
mag

magGrvs
mag

e_
mag

alphaEpoch
yr

deltaEpoch
yr

pmRA
mas/yr

e_
(...)

pmDE
mas/yr

e_
(...)

1 4.55400 39 52.90226-38 03 49.9430009.970426-38.063873 0.133 0.13315.980 0.40018.060 0.40017.559 0.40019.048 0.5001983.44001983.4400 172.3 24.2 -68.7 24.2 2 7.54600 39 52.84395-38 03 45.8961009.970183-38.062749 0.163 0.16317.062 0.30017.636 0.30017.447 0.40017.813 0.5001983.66001983.6600 -115.6 27.2 -42.2 27.2 3 7.80900 39 52.05385-38 03 57.1360009.966891-38.065871 0.133 0.13319.930 0.40019.780 0.40019.807 0.40019.609 0.5001983.14001983.1400 -316.8 23.2 -592.4 23.2 %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"	RAICRS deg	e_ mas	DEICRS deg	e_ mas	ID	Type	pmRA mas/yr	e_ (...)	pmDE mas/yr	e_ (...)	Nobs	Dt yr	Rmag mag	Bmag mag	Nmag mag	Vmag mag	Jmag mag	Hmag mag	Kmag mag
1	4.833	00 39 52.556334	-38 03 48.12917	009.9689847	612.00	-38.0633692	55.00	33049+0003684	4	-6.0	31.4	-2.3	2.8	3	12.762	17.636	17.062

%0a%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 [****ClosingBrace(s)Inserted****]
">

Gmag

%20

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

Bjmag
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 1.18800 39 52.5114440918-38 03 52.704162598S07T037662009.96879768372-38.06464004517 20010121376622013.0003                      21.306                                   2 1.49800 39 52.6858520508-38 03 51.715393066S07T029148009.96952438354-38.06436538696 20010121291482013.0003                        20.891                                 3 2.81800 39 52.7167510986-38 03 50.397033691S07T021989009.96965312958-38.06399917603 20010121219892013.0003                    21.656                                     4 3.23700 39 52.7002716064-38 03 49.861450195S07T027470009.96958446503-38.06385040283 20010121274702013.0003                          20.380                               5 3.35100 39 52.3750305176-38 03 54.791564941S07T022281009.96822929382-38.06521987915 20010121222812013.0003                      22.112                                   6 4.36800 39 52.9486083984-38 03 51.152343750S07T028062009.97061920166-38.06420898438 20010121280622013.0003                    22.170                                     7 4.41700 39 52.5821685791-38 03 48.515625000S07T021070009.96909236908-38.06347656250 20010121210702013.0003                    18.44918.01117.86020.401            16.46416.51112.330 8.760           8 4.47500 39 52.5366775350-38 03 48.095265942S07T003684009.96899223328-38.06346893311 2001012136841989.6603    17.06270017.636900            18.970  18.487                      20.58820.698 5.191 0.081 64.1 9 5.84400 39 52.2063446045-38 03 49.545593262S07T039113009.96752643585-38.06376266479 20010121391132013.0003                    22.490                                     10 6.28000 39 52.3379516602-38 03 47.526855469S07T021459009.96807479858-38.06320190430 20010121214592013.0003                        21.233                                 11 6.53200 39 52.2983551025-38 03 47.526855469S07T035511009.96790981293-38.06320190430 20010121355112013.0003                    22.130                                     12 6.83500 39 52.6151275635-38 03 46.084899902S07T028270009.96922969818-38.06280136108 20010121282702013.0003                        21.556                                 13 7.64300 39 52.5254058838-38 03 45.343322754S07T030878009.96885585785-38.06259536743 20010121308782013.0003                    20.737                                     14 8.84300 39 52.8831481934-38 03 44.684143066S07T035488009.97034645081-38.06241226196 20010121354882013.0003                      22.458                                   15 9.51800 39 52.5434875488-38 03 43.434448242S07T028575009.96893119812-38.06206512451 20010121285752013.0003                      21.718                                   1614.26500 39 51.8117523193-38 04 03.621826172S07T036078009.96588230133-38.06767272949 20010121360782013.0003                        21.748                                 1716.02500 39 51.6810607910-38 04 04.596862793S07T036879009.96533775330-38.06794357300 20010121368792013.0003                        21.583                                 1817.54700 39 53.3207702637-38 04 08.332214355S07T032044009.97216987610-38.06898117065 20010121320442013.0003                    20.564                                     1927.64300 39 53.0236816406-38 04 20.128784180S07T009844009.97093200684-38.07225799561 2001012198441987.9000          17.993200                                         1.995 0.360114.9 %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"	WISE	RAJ2000 deg	DEJ2000 deg	eeMaj arcsec	eeMin arcsec	Im	W1mag mag	e_ mag	W2mag mag	e_ mag	W3mag mag	e_ mag	W4mag mag	e_ mag	Jmag mag	Hmag mag	Kmag mag	ccf	ex	var	d2M arcsec	2M
1	4.444	00 39 52.60912	-38 03 48.4757	J003952.60-380348.4	009.969205	-38.063465	0.781	0.693	Im	16.640	0.125	16.364	0.311	12.633		9.038					0000	0	nnnn		2M

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