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	1.256	23 31 41.80536	-13 15 02.2500	0750-21497381	352.924189	-13.250625			18.7	19.4	1953.617
2	1.686	23 31 41.77200	-13 15 03.3012	0750-21497375	352.924050	-13.250917			19.3	19.0	1954.572
3	24.210	23 31 41.51736	-13 14 39.1920	0750-21497359	352.922989	-13.244220			18.7	16.7	1953.617
4	24.963	23 31 41.81688	-13 15 27.7524	0750-21497384	352.924237	-13.257709			19.0	18.0	1953.617
5	25.247	23 31 42.28536	-13 15 27.3600	0750-21497425	352.926189	-13.257600			19.4	19.0	1953.617

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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	23.472	23 31 41.48256	-13 14 40.0740	S32022305523	352.922844	-13.244465	1990.723	17.26	0.42	18.88	0.36	0	3.09	0.15
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%3cEM%3e1&%3cFONT%20COLOR=%27#CD5B45%27>23.472&%3cFONT%20COLOR=%27#CD5B45%27>23%2031%2041.48256&%3cFONT%20COLOR=%27#CD5B45%27>-13%2014%2040.0740&S32022305523&352.922844&-13.244465&1990.723&17.26&%200.42&18.88&%200.36&0&%20%203.09&%200.15%3cBR%3e">\Ahref='VizieR-5?-ref=VIZ664050cf3dd6dd&-out.add=.&-source=I/271/out&GSC2.2===S32022305501' class='full'225.61923 31 41.73744-13 15 28.3392S32022305501352.923906-13.2578721990.72318.16 0.43    0 2.62 0.12 %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	1.536	23 31 41.77752	-13 15 02.6928	0767-0758038	352.924073	-13.250748	306	184	1953.6	0	0	2	19.47	20.23
2	1.682	23 31 41.77752	-13 15 03.5028	0767-0758039	352.924073	-13.250973	153	153	1976.6	0	0	5	20.40	19.69	20.42	19.36	18.94
3	14.376	23 31 41.14536	-13 15 12.3408	0767-0758032	352.921439	-13.253428	86	319	1966.3	-20	-4	3	21.05	20.18		20.08
4	23.508	23 31 41.49480	-13 14 39.9912	0767-0758033	352.922895	-13.244442	33	128	1976.6	0	0	5	19.68	17.04	19.08	17.15	15.96
5	25.530	23 31 41.75544	-13 15 28.2708	0767-0758037	352.923981	-13.257853	100	77	1976.6	0	0	5	20.53	18.68	20.07	17.95	17.83
6	25.611	23 31 42.26472	-13 15 27.8028	0767-0758043	352.926103	-13.257723	157	124	1971.9	0	0	4	20.52	19.86	20.79	20.20
7	26.978	23 31 42.30216	-13 15 29.0808	0767-0758044	352.926259	-13.258078	58	445	1972.6	0	0	2		19.94		19.39

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

deg&%">\BegDIVclass='sort-down ' </A>stringr

pmRA
mas/yr

e_
(...)pmDE
mas/yre_
(...)Bmag
magr_

Vmag
magr_

Rmag
magr_

Jmag
magHmag
magKmag
magR

1 1.53923 31 41.777328-13 15 02.689920767-0827612..352.9240722-13.2507472B 0.0 0.0 0.0 0.019.470o    20.230e         2 1.68323 31 41.777328-13 15 03.499920767-0827611..352.9240722-13.2509722B 0.0 0.0 0.0 0.020.420B    19.360B         314.37623 31 41.145336-13 15 12.340080767-0827605..352.9214389-13.2534278B -20.0 2.0 -4.0 8.021.050o    20.080B         423.51023 31 41.494656-13 14 39.990120767-0827606YM352.9228944-13.2444417B 0.0 0.0 0.0 0.018.260Y17.860Y17.150B14.61814.05013.845   525.53023 31 41.755344-13 15 28.270080767-0827610.M352.9239806-13.2578528B 0.0 0.0 0.0 0.020.070B    17.950B16.26515.66615.401   625.60823 31 42.264672-13 15 27.799920767-0827616..352.9261028-13.2577222B 0.0 0.0 0.0 0.020.790B    20.200B         726.97723 31 42.301992-13 15 29.080080767-0827617..352.9262583-13.2580778B 0.0 0.0 0.0 0.0        19.390B         %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	1.253	23 31 41.80416	-13 15 03.3228	SB70005511	352.924184	-13.250923	1990.723	19.41	20.43			3	2.73	0.22
2	14.452	23 31 41.16552	-13 15 12.7728	SB70005508	352.921523	-13.253548	1990.723	19.96				0	1.98	0.28
3	23.479	23 31 41.48256	-13 14 40.0668	SB70005523	352.922844	-13.244463	1990.723	17.26	19.41		16.05	0	3.09	0.15
4	25.615	23 31 41.73768	-13 15 28.3356	SB70005501	352.923907	-13.257871	1990.723	18.16	20.11		17.47	3	2.62	0.12
5	26.010	23 31 42.25176	-13 15 28.2528	SB70005499	352.926049	-13.257848	1990.723	19.56	20.98			3	2.85	0.47

%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 [****ClosingBrace(s)Inserted****]
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%27%29%22%20onMouseOut=%22laz%28%29%22>r1mag

%20

%22>%5cFONT SIZE=-1magr2mag
mag

imag
mag

No

fl

1 1.82723 31 41.76624-13 15 03.4884352.924026-13.250969 -2.2 1.9    20.4020.4219.69  18.94 4 0 223.04623 31 41.49408-13 14 40.4700352.922892-13.244575 1.5 -15.314.61913.84519.6819.0817.04  15.96 5 0 325.53823 31 42.27168-13 15 27.7056352.926132-13.257696 3.7 2.0    20.5220.7919.86     3 0 425.80723 31 41.74248-13 15 28.5336352.923927-13.257926 -2.8 -7.916.26515.40220.5320.0718.68  17.83 5 0 %0a%0a

Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	ID	RAICRS deg	DEICRS deg	pmRAp mas/yr	pmDEp mas/yr	pmRAx mas/yr	pmDEx mas/yr	Fmag mag	Bjmag mag	Vmag mag	Nmag mag	Jmag mag	e_ mag	Hmag mag	e_ mag	Kmag mag	e_ mag	2Mkey	Bmag mag	Rmag mag	Fld	dT yr	fg	fs	M
1	23.026	23 31 41.49290	-13 14 40.4954	XPM 153-1038541	352.922887	-13.244582	2.15	-21.16	1.69	-21.23	17.260	19.408		16.050	14.619	0.029	14.050	0.036	13.845	0.043	1278651713	18.7	16.7	765	44.858460	0	0	M
2	25.900	23 31 41.73071	-13 15 28.6129	XPM 153-1038543	352.923878	-13.257948	-17.13	-11.41	-17.59	-11.48	18.161	20.112		17.474	16.265	0.106	15.666	0.130	15.402	0.181	1278651733	19.0	18.0	765	44.858460	0	0	M

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

%3cEM%3e%20%3cFONT%20COLOR=%27#CD5B45%27>_RAJ2000

%20

%22>%5cFONT SIZE=-1"h:m:s" _DEJ2000
"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 1.40023 31 41.79869-13 15 03.4912352.924161-13.250970 0.400 0.40020.429 0.30019.408 0.30019.622 0.40018.779 0.5001990.72001990.7200 -8.5 16.9 -17.6 8.9 2 1.82723 31 41.76624-13 15 03.4882352.924026-13.250969 0.115 0.11520.420 0.40019.690 0.40019.856 0.40019.224 0.5001973.16001973.1600 -2.2 6.1 1.9 6.1 323.04623 31 41.49405-13 14 40.4701352.922892-13.244575 0.066 0.06619.080 0.40017.040 0.40017.219 0.40015.729 0.5001990.22001990.2200 1.5 4.1 -15.3 4.1 423.24123 31 41.47608-13 14 40.3366352.922817-13.244538 0.400 0.40019.408 0.30017.260 0.30017.412 0.40015.864 0.5001990.72001990.7200 -10.0 9.7 -28.3 3.0 525.53923 31 42.27167-13 15 27.7061352.926132-13.257696 0.133 0.13320.790 0.40019.860 0.40020.062 0.40019.283 0.5001965.64001965.6400 3.7 8.1 2.0 8.1 625.80723 31 41.74244-13 15 28.5340352.923927-13.257926 0.093 0.09320.112 0.30018.161 0.30018.358 0.40016.919 0.5001981.78001981.7800 -2.8 4.8 -7.9 4.8 726.26023 31 42.23660-13 15 28.5537352.925986-13.257932 0.400 0.40020.979 0.30019.564 0.30019.806 0.40018.696 0.5001990.72001990.7200 -23.6 5.5 -31.9 6.4 %0a%0a%3cP%3e%0a%3cFONT%20SIZE=%27-1%27%3e%3cEM%3e%3cFONT%20COLOR=%27#0000FF%27>%3cB%3eNote:%20Zone%20-40/%2b50deg%3cP%3e%0a

Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	CMC15	RA_ICRS deg	DE_ICRS deg	r'mag mag	pflag	Nt	Jmag mag	Hmag mag	Ksmag mag
1	22.772	23 31 41.48254	-13 14 40.7975	233141.4-131440	352.922844	-13.244666	16.795		1	14.619	14.050	13.845

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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 [****ClosingBrace(s)Inserted****]
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Kmag

%20

%22>%5cFONT SIZE=-1mag 1 1.60023 31 41.785212-13 15 03.54824352.9241050 85.00-13.2509856 209.0047276+00055114 2.0 2.5 -4.9 6.2 838.059 19.408 20.429           214.35823 31 41.153812-13 15 12.45103352.9214742 83.00-13.2534586 422.0047276+00055080 -6.3 3.0 -14.4 15.2 338.057 19.955             323.20523 31 41.484003-13 14 40.34391352.9228500 41.00-13.2445400 57.0047276+00055230 -2.2 1.3 -18.6 1.9 1045.903 17.260 19.408 16.050   14.619 14.050 13.845 425.65423 31 41.727419-13 15 28.36189352.9238642 254.00-13.2578783 70.0047276+00055010 -26.2 8.4 -10.0 2.3 1045.903 18.161 20.112 17.474   16.265 15.666 15.402 526.10123 31 42.278051-13 15 28.26211352.9261585 99.00-13.2578506 174.0047276+00054994 10.4 3.4 -20.2 6.0 638.059 19.564 20.979           %0a%0a

Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	RA_ICRS deg	e_ mas	DE_ICRS deg	e_ mas	Source	Plx mas	pmRA mas/yr	pmDE mas/yr	RADEcor	Dup	<FG> e-/s	e_ e-/s	<Gmag> mag	Var
1	22.636	23 31 41.504244172	-13 14 40.85603396	352.9229343507	4.247	-13.2446822317	4.700	2409050729739238784				0.997	0	2.5969e+03	1.6379e+01	16.989	NOT_AVAILABLE
2	25.942	23 31 41.754951332	-13 15 28.68359302	352.9239789639	2.961	-13.2579676647	3.124	2409050420501591680				0.995	0	8.2818e+02	2.9245e+00	18.229	NOT_AVAILABLE
3	25.983	23 31 42.277149053	-13 15 28.14376620	352.9261547877	2.211	-13.2578177128	2.074	2409050420501591424				0.835	0	1.6293e+02	1.9566e+00	19.995	NOT_AVAILABLE

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