VizieR

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The 1 column 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.

I/252/out The USNO-A2.0 Catalogue (Monet+ 1998)
ReadMe+ftp

metaI/252/out

The Full Catalogue (526280881 rows) (Note)

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Full	_r arcsec	USNO-A2.0	RAJ2000 deg	DEJ2000 deg	ACTflag	Mflag	Bmag mag	Rmag mag	Epoch yr
1	2.710	0525-43249799	321.064642	-33.798712			20.6	17.9	1982.205

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.

I/284/out The USNO-B1.0 Catalog (Monet+ 2003)
ReadMe+ftp
2003AJ....125..984M
metaI/284/out

The Whole-Sky USNO-B1.0 Catalog of 1,045,913,669 sources (1045175762 rows)

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Full	_r arcsec	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	2.897	0562-0885710	321.064489	-33.798573	592	49	1986.3	-20	22	3		19.74	20.69	20.78

Note: The Naval Observatory Merged Astrometric Dataset (NOMAD) contains astrometric and photometric data for over 1 billion stars derived from the Hipparcos (I/239), Tycho-2 (I/259), UCAC2 (I/289), and USNO-B1.0 (I/284) catalogs for astrometry and optical photometry, supplemented by 2MASS (II/246) near-infrared photometry.
An efficient remote query program findnomad1 is available in the cdsclient package, for Unix/Linux platforms

I/297/out NOMAD Catalog (Zacharias+ 2005)
ReadMe+ftp
2004AAS...205.4815Z
metaI/297/out

The NOMAD-1 Catalog (1117612732 rows)

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Full	_r arcsec	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	2.896	0562-0976210	..	321.0644889	-33.7985722	B	-20.0	39.0	22.0	3.0	20.690	B			20.780	B

Note: This version of the GSC-II has no proper motions, but the limits on brightness which existed on GSC2.2 (F<18.5, B_j<19.5) were removed.

I/305/out The Guide Star Catalog, Version 2.3.2 (GSC2.3) (STScI, 2006)
ReadMe+ftp
2008AJ....136..735L
metaI/305/out

The Full GSC2.3.2 Catalogue (945592683 objects) (945592683 rows)

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Full	_r arcsec	GSC2.3	RAJ2000 deg	DEJ2000 deg	Epoch yr	Fmag mag	jmag mag	Vmag mag	Nmag mag	Class	a pix	e
1	2.993	SCLG015089	321.064515	-33.798688	1994.732	20.35	21.98			3	1.46	0.37

I/317/sample

Target Name (resolved by Sesame) or Position:	Target dimension:
NB: The epoch used for the query is the original epoch of the table(s)	Radius Box size

Full	_r arcsec	AllWISE	RAJ2000 deg	DEJ2000 deg	Im	W1mag mag	e_ mag	W2mag mag	e_ mag	W3mag mag	e_ mag	W4mag mag	e_ mag	Jmag mag	e_ mag	Hmag mag	e_ mag	Kmag mag	e_ mag	ccf	ex	var	pmRA mas/yr	e_ (...)	pmDE mas/yr	e_ (...)	qph	d2M arcsec	2M
1		EN																											2M
2	2.517	J212415.49-334754.0	321.0645604	-33.7983453	Im	15.632	0.043	14.891	0.071	11.838	0.292	8.781								0000	0	00nn	165	392	319	410	AABU		2M

Full	_r arcsec	objID	RAJ2000 deg	DEJ2000 deg	FW1 309.05nJy	FW2 167.66nJy	e_FW1 309.05nJy	e_FW2 167.66nJy	q_W1	q_W2	fFW1	fFW2
1	2.539	3203m334o0078937	321.0645519	-33.7983285	0.0000e+00	9.0844e+02	0.0000e+00	3.2923e+01	0.00000	1.00000	0.0000	0.6977
2	2.891	3203m334o0005253	321.0647604	-33.7989020	3.9284e+02	2.8252e+02	8.6463e+00	3.2394e+01	1.00000	1.00000	0.6883	0.2889
3	4.208	3203m334o0050422	321.0660579	-33.7972668	1.5509e+02	0.0000e+00	8.1523e+00	0.0000e+00	1.00000	0.00000	0.4327	0.0000
4	4.774	3203m334o0060026	321.0640518	-33.7975903	2.7877e+02	0.0000e+00	8.5217e+00	0.0000e+00	1.00000	0.00000	0.5362	0.0000

Full	_r arcsec	RA_ICRS deg	e_ arcsec	DE_ICRS deg	e_ arcsec	Name	nW1	mW1	nW2	mW2	RAPMdeg deg	e_ arcsec	DEPMdeg deg	e_ arcsec	pmRA arcsec/yr	e_ (...)	pmDE arcsec/yr	e_ (...)	snrW1pm	snrW2pm	FW1pm ct	e_ ct	FW2pm ct	e_ ct	W1mproPM mag	W2mproPM mag	pmQual	Dist arcsec	snrdELON	snrdELAT	chi2pmRA	chi2pmDE	ka	k1	k2	km	Sep arcsec	abf	WISEA
1	2.803	321.0646439	0.0796	-33.7987597	0.1226	J212415.51-334755.4	12	12	12	12	321.0646239	0.0792	-33.7987429	0.1206	-0.01007	0.0240	0.00797	0.0244	26.1	20.9	4.4e+02	2e+01	8.9e+02	4e+01	15.892	15.127	3N000	0.207	0.066	0.809	1.97e+00	8.67e-01	3	3	3	3	1.455	00	WISEA
2	4.560	321.0643632	0.1010	-33.7973714	0.1020	J212415.44-334750.4	12	12	12	12	321.0643513	0.0997	-33.7973588	0.1013	0.02267	0.0365	0.06950	0.0356	30.2	20.4	2.9e+02	1e+01	5.2e+02	3e+01	16.343	15.700	3N000	0.850	3.435	2.202	2.77e+00	5.69e-03	3	3	3	3		00	WISEA

Full	_r arcsec	n_	1RXH	ErrPos arcsec	CRate ct/s	e_ ct/s	varFlag	SRCflags	SEQflags	Comment	RAJ2000 deg	DEJ2000 deg
1	2.7		1RXH J212415.9-334753	8	9.36e-04	2.9e-04	N	.....u_......	......._		321.0663	-33.7983
2	2.9		1RXH J212415.7-334751	6	8.93e-04	3.0e-04	N	..e.iu_..p...	......._		321.0656	-33.7975