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	0.983	20 27 03.60336	-71 18 19.5228	0150-19476868	306.765014	-71.305423			19.7	18.0	1981.055
2	11.694	20 27 05.82936	-71 18 20.3112	0150-19477113	306.774289	-71.305642			19.0	18.0	1981.055
3	24.312	20 27 04.42944	-71 17 55.8528	0150-19476957	306.768456	-71.298848			18.7	17.8	1981.055
4	24.533	20 26 58.39344	-71 18 24.3828	0150-19476214	306.743306	-71.306773			17.9	17.3	1981.055
5	25.568	20 27 07.58808	-71 18 35.4204	0150-19477336	306.781617	-71.309839			17.1	17.0	1981.055
6	25.836	20 27 03.13488	-71 18 45.4608	0150-19476804	306.763062	-71.312628			20.5	17.9	1980.115

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

pix&%">\BegDIVclass='sort-down ' </A>dece

124.57320 27 04.46184-71 17 55.6188S31311329514306.768591-71.2987831993.69018.27 0.43    3 2.95 0.16 224.72320 26 58.33944-71 18 24.0264S31311329397306.743081-71.3066741992.63717.25 0.4218.29 0.333 3.06 0.13 325.46420 27 07.59624-71 18 35.2008S31311329314306.781651-71.3097781993.69016.76 0.4217.40 0.330 3.71 0.03 %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	1.126	20 27 03.59688	-71 18 19.0404	0186-0429380	306.764987	-71.305289	10	6	1984.2	-14	8	3		19.46	19.56	19.51
2	11.844	20 27 05.86272	-71 18 20.0916	0186-0429385	306.774428	-71.305581	38	52	1986.8	0	0	4		18.81	19.40	19.10	18.42
3	15.045	20 27 01.80672	-71 18 06.7104	0186-0429373	306.757528	-71.301864	229	244	1984.6	0	0	2			20.96	23.12
4	24.329	20 26 58.42752	-71 18 24.1524	0186-0429366	306.743448	-71.306709	85	73	1987.0	0	0	4		17.32	18.05	17.16	17.21
5	24.791	20 27 04.51680	-71 17 55.4532	0187-0435492	306.768820	-71.298737	68	3	1987.0	16	16	4		18.33	19.19	18.43	18.15
6	25.490	20 27 07.60488	-71 18 35.1900	0186-0429391	306.781687	-71.309775	14	25	1987.1	0	0	4		16.75	17.24	16.61	16.33
7	26.214	20 27 03.03072	-71 18 45.8100	0186-0429376	306.762628	-71.312725	28	48	1984.2	-22	-20	3		19.60	20.93	20.13

%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 1.12520 27 03.596664-71 18 19.040040186-0434704..306.7649861-71.3052889B -14.0 0.0 8.0 0.019.560B    19.510B         211.84420 27 05.862672-71 18 20.090160186-0434709..306.7744278-71.3055806B 0.0 0.0 0.0 0.019.400B    19.100B         315.04520 27 01.806672-71 18 06.710040186-0434697..306.7575278-71.3018639B 0.0 0.0 0.0 0.020.960B    23.120B         424.33020 26 58.427328-71 18 24.149880186-0434690YM306.7434472-71.3067083B 0.0 0.0 0.0 0.018.380Y17.740Y17.160B16.30015.80415.667   524.79420 27 04.516656-71 17 55.449960187-0441178..306.7688194-71.2987361B 16.0 4.0 16.0 0.019.190B    18.430B         625.49020 27 07.604664-71 18 35.190000186-0434715YM306.7816861-71.3097750B 0.0 0.0 0.0 0.017.800Y17.080Y16.610B16.08015.58615.410   726.21420 27 03.030672-71 18 45.810000186-0434700..306.7626278-71.3127250B -22.0 1.0 -20.0 2.020.930B    20.130B         %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	1.198	20 27 03.58440	-71 18 18.8460	SAXQ009404	306.764935	-71.305235	1993.690	19.35	20.25			3	2.03	0.10
2	11.851	20 27 05.86392	-71 18 20.1240	SAXQ009390	306.774433	-71.305590	1993.690	18.60	20.07		18.23	3	2.77	0.11
3	15.609	20 27 01.78032	-71 18 06.1308	SAXQ018292	306.757418	-71.301703	1975.661		21.70			3	1.59	0.39
4	24.580	20 27 04.46184	-71 17 55.6116	SAXQ009514	306.768591	-71.298781	1993.690	18.27	19.87		17.75	3	2.95	0.16
5	24.720	20 26 58.33968	-71 18 24.0192	SAXQ009397	306.743082	-71.306672	1992.637	17.25	18.40		16.90	3	3.06	0.13
6	25.461	20 27 07.59648	-71 18 35.1936	SAXQ009314	306.781652	-71.309776	1993.690	16.76	17.51		16.45	3	3.71	0.03
7	26.044	20 27 03.03720	-71 18 45.6408	SAXQ009260	306.762655	-71.312678	1992.637	20.36	21.94			3	1.46	0.38

%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 [****ClosingBrace(s)Inserted****]
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%27%29%22%20onMouseOut=%22laz%28%29%22>b1mag

%20

%22>%5cFONT SIZE=-1magb2mag
mag

r1mag
mag

r2mag
mag

imag
mag

No

fl

1 1.18020 27 03.63216-71 18 19.2636306.765134-71.305351 -17.3 8.8      19.5619.4619.51   3 0 211.97520 27 05.88792-71 18 20.3076306.774533-71.305641 -4.3 -1.6      19.4018.8119.1018.42 4 0 314.67120 27 01.85664-71 18 07.0020306.757736-71.301945 9.3 -11.9      20.96  23.12   2 0 423.95920 26 58.50720-71 18 24.1884306.743780-71.306719 19.1 5.616.30015.668  18.0517.3217.1617.21 5 0 524.63020 27 04.54392-71 17 55.6476306.768933-71.298791 12.0 17.8      19.1918.3318.4318.15 4 0 625.78420 27 07.68096-71 18 35.1936306.782004-71.309776 12.8 9.116.08115.410  17.2416.7516.6116.33 5 0 726.42320 27 03.06528-71 18 46.0296306.762772-71.312786 -25.3 -19.2      20.9319.6020.13   3 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	23.819	20 26 58.53481	-71 18 24.1346	XPM 037-0616039	306.743895	-71.306704	27.72	3.53	26.41	3.30	17.253	18.403		16.902	16.300	0.108	15.804	0.167	15.668	0.215	1059217971	17.9	17.3	74	19.377121	0	0	M
2	25.797	20 27 07.69970	-71 18 35.0964	XPM 037-0616069	306.782082	-71.309749	19.32	8.54	18.02	8.32	16.759	17.507		16.446	16.081	0.098	15.586		15.410		1059217975	17.1	17.0	74	19.377121	0	0	M

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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"SPMID

RAJ2000
deg

e_
mas

DEJ2000
deg

e_
mas

pmRA
mas/yr

e_
(...)

pmDE
mas/yr

e_
(...)

Epoch
yr

N1

N2

Nc

Bmag
mag

Vmag
mag

Jmag
mag

Hmag
mag

Kmag
mag

2M

igal

A

124.35220 26 58.431240-71 18 24.36408 770093963306.7434635 38.1-71.3067678 38.2 12.35 4.20 -8.91 4.362002.47 4 0 718.7517.6916.30015.80415.6682M0A 225.82120 27 07.657920-71 18 35.40060 770093972306.7819080 26.6-71.3098335 26.6 3.31 4.01 -4.20 4.182004.61 4 0 917.9717.4516.08115.58615.4102M0A %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_ mag	magG mag	e_ mag	magGrvs mag	e_ mag	alphaEpoch yr	deltaEpoch yr	pmRA mas/yr	e_ (...)	pmDE mas/yr	e_ (...)
1	1.179	20 27 03.63213	-71 18 19.2641	306.765134	-71.305351	0.133	0.133	20.246	0.300	19.352	0.300	19.548	0.400	18.795	0.500	1984.2800	1984.2800	-17.3	19.2	8.8	19.2
2	11.975	20 27 05.88793	-71 18 20.3078	306.774533	-71.305641	0.115	0.115	20.066	0.300	18.599	0.300	18.841	0.400	17.697	0.500	1986.8800	1986.8800	-4.3	15.3	-1.6	15.3
3	23.960	20 26 58.50718	-71 18 24.1882	306.743780	-71.306719	0.100	0.100	18.403	0.300	17.253	0.300	17.480	0.400	16.549	0.500	1990.3900	1990.3900	19.1	11.5	5.6	11.5
4	24.629	20 27 04.54393	-71 17 55.6478	306.768933	-71.298791	0.115	0.115	19.874	0.300	18.272	0.300	18.511	0.400	17.280	0.500	1987.0800	1987.0800	12.0	15.5	17.8	15.5
5	25.326	20 27 07.58131	-71 18 35.0677	306.781589	-71.309741	0.400	0.400	17.507	0.300	16.759	0.300	16.930	0.400	16.282	0.500	1993.6900	1993.6900	-11.3	10.2	21.0	6.6
6	25.784	20 27 07.68093	-71 18 35.1938	306.782004	-71.309776	0.094	0.094	17.240	0.400	16.610	0.400	16.757	0.400	16.196	0.500	1991.6100	1991.6100	12.8	10.5	9.1	10.5
7	26.423	20 27 03.06524	-71 18 46.0300	306.762772	-71.312786	0.133	0.133	21.935	0.300	20.362	0.300	20.602	0.400	19.390	0.500	1984.2800	1984.2800	-25.3	19.2	-19.2	19.2

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Full	_r [****ClosingBrace(s)Inserted****]
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%3cEM%3e%20%3cFONT%20COLOR=%27#CD5B45%27>_r

%20

%22>%5cFONT SIZE=-1arcsec _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 0.99720 27 03.565979-71 18 19.05403306.7648582 34.00-71.3052928 39.0046942+00094044 -18.3 2.0 2.8 2.2 418.029 19.352 20.246           211.73220 27 05.836859-71 18 20.33720306.7743202 48.00-71.3056492 44.0046942+00093904 2.0 3.3 -1.8 3.0 618.991 18.599 20.066 18.231         324.35120 26 58.425779-71 18 24.22575306.7434407 41.00-71.3067294 24.0046942+00093974 4.0 2.8 -0.7 1.6 618.991 17.253 18.403 16.902   16.300 15.804 15.668 424.47720 27 04.494667-71 17 55.75099306.7687278 56.00-71.2988197 41.0046942+00095144 13.7 3.8 -0.6 2.8 618.991 18.272 19.874 17.752         525.63620 27 07.617874-71 18 35.34812306.7817411 43.00-71.3098189 28.0046942+00093140 3.9 2.9 -0.1 1.9 618.991 16.759 17.507 16.446   16.081 15.586 15.410 626.50620 27 03.107815-71 18 46.12503306.7629492 207.00-71.3128125 92.0046942+00092604 -2.8 10.4 -7.1 4.7 316.976 20.362 21.935           %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	0.768	20 27 03.556495703	-71 18 19.82711851	306.7648187321	0.320	-71.3055075329	0.747	6374575170640999552				0.251	0	2.4895e+02	3.3585e+00	19.534	NOT_AVAILABLE
2	12.012	20 27 05.895890768	-71 18 20.28003857	306.7745662115	0.323	-71.3056333440	0.490	6374575170640998912				-0.039	0	4.5663e+02	2.9420e+00	18.876	NOT_AVAILABLE
3	24.194	20 26 58.463877411	-71 18 24.34413616	306.7435994892	0.122	-71.3067622600	0.232	6374575926555243264				0.183	0	1.7221e+03	9.8280e+00	17.435	NOT_AVAILABLE
4	24.358	20 27 04.545025652	-71 17 55.92758570	306.7689376069	0.223	-71.2988687738	0.354	6374575926555247360				0.174	0	6.6147e+02	3.0559e+00	18.474	NOT_AVAILABLE
5	25.653	20 27 07.672199561	-71 18 35.03251736	306.7819674982	0.163	-71.3097312548	0.186	6374575170643488128				0.209	1	1.6837e+03	1.0460e+01	17.459	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