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)
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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	0.695	0675-00861223	037.110475	-21.550134			15.2	14.3	1982.353

Note: The Guide Star Catalog has been constructed to support the operational need of the Hubble Space Telescope. It contains over 25 million positions for about 19 million objects, of which more than 15 million are classified as stars. The version 1.2 is a new astrometric reduction which results in absolute position errors about 0.3-0.4 arcsec. (see GSC pages at URL http://www-gsss.stsci.edu/gsc/gsc.html)

I/254/out The HST Guide Star Catalog, Version 1.2 (Lasker+ 1996)
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2001AJ....121.1752M
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The Full Catalogue (25241730 positions) (25241730 rows)

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Full	_r arcsec	GSC	RAJ2000 deg	DEJ2000 deg	PosErr arcsec	Pmag mag	e_ mag	n_	Class	Plate	Epoch yr
1	0.57	0586201462	037.11057	-21.55012	2.5	14.76	0.37	0	0	012A	1979.883

Note: The GSC-ACT (or GSC1.3) is a recalibration of the GSC1.1, the catalogue constructed to support the operational need of the Hubble Space Telescope, with the ACT, the combination of the Astrographic Catalogue and the Tycho catalogue derived from the Hipparcos mission; see http://www.projectpluto.com/gsc_act.htm for more details about this recalibration.

I/255/out The HST Guide Star Catalog, Version GSC-ACT (Lasker+ 1996-99)
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metaI/255/out

The GSC-ACT Full Catalogue (25241730 positions) (25241730 rows)

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Full	_r arcsec	GSC	RAJ2000 deg	DEJ2000 deg	PosErr arcsec	Pmag mag	e_ mag	n_	Class	Epoch yr
1	0.53	0586201462	037.11055	-21.55014	2.5	14.80	0.38	0	0	1979.883

Note: The construction of the GSC-II is still in progress: this version has no proper motions, and the magnitude limits are 18.5 in F (red) and 19.5 in J (blue). The data are copyrighted, check the data use Policy.

I/271/out The GSC 2.2 Catalogue (STScI, 2001)
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metaI/271/out

The Full GSC2.2.1 Catalogue (455851237 objects) (455851237 rows)

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Full	_r arcsec	GSC2.2	RA(ICRS) deg	DE(ICRS) deg	Epoch yr	Rmag mag	e_ mag	Bjmag mag	e_ mag	Class	a pix	e
1	0.155	S0311331207	037.110586	-21.550243	1996.795	14.30	0.42	14.87	0.25	0	5.58	0.12

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	0.357	0684-0036571	037.110520	-21.550303	145	119	1977.2	6	-20	5	15.09	14.50	15.15	14.12	13.97

Note: More recent versions available: UCAC3 (I/315) and UCAC4 (I/322); see also the UCAC home page at http://ad.usno.navy.mil/ucac/

I/289/out UCAC2 Catalogue (Zacharias+ 2004)
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2004AJ....127.3043Z
metaI/289/out

The Second U.S. Naval Observatory CCD Astrograph Catalog (48330571 rows)

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Full	_r arcsec	2UCAC	RAJ2000 deg	e_ mas	DEJ2000 deg	e_ mas	UCmag mag	No	Nc	pmRA mas/yr	pmDE mas/yr	2Mkey	Jmag mag	Kmag mag
1	0.039	23043950	037.1106198	27	-21.5502603	25	14.44	5	2	25.0	-27.0	141491549	13.755	13.537

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	0.039	0684-0036684	YM	037.1106197	-21.5502603	C	25.0	12.0	-27.0	12.0	14.540	Y	14.000	Y	14.120	B	13.755	13.535	13.537

Note: Zone -30/+50deg

I/304/out Carlsberg Meridian Catalog 14 (CMC14) (CMC, 2006)
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metaI/304/out

The full CMC-14 catalog (around 95.85million sources in the region -30 to +50°) (95858475 rows)

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Full	_r arcsec	CMC14	f_	RAICRS deg	DEICRS deg	r'mag mag	Nt	Jmag mag	Hmag mag	Ksmag mag
1	0.139	022826.5-213301		037.110636	-21.550307	14.393	2	13.755	13.535	13.537

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
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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	0.157	S2NX000207	037.110587	-21.550241	1996.795	14.30	14.87		14.01	0	5.58	0.12

Note: The limiting magnitude is about 15.2 in the GSC photometric system.

I/312/sample PPMX Catalog of positions and proper motions (Roeser+ 2008)
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2008A&A...488..401R
metaI/312/sample

The PPMX Catalog (Position and Proper Motions eXtended) (18088919 rows)

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Full	_r arcsec	PPMX	RAJ2000 deg	DEJ2000 deg	pmRA mas/yr	pmDE mas/yr	Cmag mag	Rmag mag	Jmag mag	Hmag mag	Kmag mag	Nobs	P	sub
1	0.033	022826.5-213300	037.110620	-21.550262	10.52	-31.12	14.760	14.641	13.755	13.535	13.537	4		O

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	GSC2	RA_ICRS deg	DE_ICRS deg	objID	Epoch yr	Class	Gmag mag	OMag mag	Bjmag mag	Fpgmag mag	Npgmag mag	Bmag mag	Vmag mag	umag mag	gmag mag	rmag mag	imag mag	zmag mag	ymag mag	Jmag mag	Hmag mag	Ksmag mag	W1mag mag	W2mag mag	W3mag mag	W4mag mag	FUVmag mag	NUVmag mag	a pix	e pix	PA pix
1	0.511	S2NX000207	037.11068677351	-21.55039920096	20311331207	2015.500	0	14.439298	14.528800	14.867400	14.297600	14.012600	14.860000	14.513000	15.586	14.615	14.476	14.454	14.478	14.4938	13.755	13.535	13.537	13.488	13.478	12.732	8.620	20.943	16.984	5.575	0.119	38.6
2	1.880	S2NX039422	037.11010203000	-21.55007145000	2031133139422	2011.305	3									19.116	19.205		19.584
3	4.792	S2NX031160	037.11126327515	-21.54908180237	2031133131160	2013.000	3											21.290

Full	_r arcsec	RAJ2000 deg	e_ 10-5deg	DEJ2000 deg	e_ 10-5deg	mag mag	e_ mag	emag mag	Nobs	N1	Ndet	flag
1	1.71	037.11040	80	-21.55070	86	14.877	0.250	0.200	81	99	99	0
2	1.73	037.11058	62	-21.55075	73	14.913	0.209	0.186	47	66	66	0

Full	_r arcsec	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	ymag mag	e_ mag	yKmag mag	e_ mag	yFlags
1	0.482	037.110682890	-21.550391930	82130371106539949	503635968	60	0.0031	0.0049	56308.330995370	5	83	14.6154	0.0020	14.6558	0.0012	115000	14.4763	0.0023	14.5164	0.0041	115000	14.4541	0.0029	14.4975	0.0014	115000	14.4778	0.0024	14.5341	0.0070	115000	14.4938	0.0029	14.5133	0.0086	115000
2	1.880	037.110102030	-21.550071450	82140371100760171	268959744	32	0.0203	0.0203	55894.305138890	0	3	19.1164	0.0215			4120	19.2051	0.0335			16781328					0	19.5845	0.0650			4120					0

Full	_r arcsec	RAJ2000 deg	DEJ2000 deg	Name	Mclass	Uap3 mag	e_ mag	Uperrbits	Gap3 mag	e_ mag	Gperrbits	Rap3 mag	e_ mag	Rperrbits	Iap3 mag	e_ mag	Iperrbits	Zap3 mag	e_ mag	Zperrbits
1	0.321	037.110629	-21.550360	VST-ATLAS J022826.55-213301.30	-1							14.4295	0.0008		14.4433	0.0010		14.4101	0.0017
2	4.794	037.111263	-21.549081	VST-ATLAS J022826.70-213256.69	1										21.4759	0.1440

Full	_r arcsec	DES	RA_ICRS deg	DE_ICRS deg	CoadID	Aimg pix	Bimg pix	PA deg	ClCoad	ClWavg	gFlag	rFlag	iFlag	zFlag	yFlag	gmag mag	rmag mag	imag mag	zmag mag	Ymag mag	e_gmag mag	e_rmag mag	e_imag mag	e_zmag mag	e_Ymag mag
1	0.682	DES J022826.51-213301.5	037.110491	-21.550417	1280198836	7.944	7.197	9.718	3	-9	3	3	3	3	7	15.4573	17.0491	17.3016	17.3681	14.5389	0.0002	0.0009	0.0022	0.0046	0.0012
2	2.071	DES J022826.69-213301.5	037.111218	-21.550421	1280199288	5.241	2.697	0.717	3	-9	3	3	3	3	3	17.6448	18.0021	18.2234	18.3230	17.3844	0.0007	0.0010	0.0025	0.0049	0.0069