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	0.332	0675-36749036	329.676053	-20.487742			13.6	13.0	1981.167

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)
ReadMe+ftp
2001AJ....121.1752M
metaI/254/out

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	0.30	0638201298	329.67607	-20.48766	0.3	13.88	0.40	0	0	020N	1977.542

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	0.57	0638201298	329.67599	-20.48764	0.3	13.89	0.41	0	0	1977.542

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	0.078	S3312012135	329.676141	-20.487686	1991.748	12.71	0.42	13.91	0.29	0	5.99	0.11

Note: Detailed introduction can be found in intro.tex (see also http://aries.usno.navy.mil/ad/ac.html) Direct links to Hipparcos and Tycho observations are provided from the relevant columns.

I/275/ac2002 The AC 2000.2 Catalogue (Urban+ 2001)
ReadMe+ftp
1998AJ....115.1212U
metaI/275/ac2002

All 4,621,751 stars from the AC2000.2 Catalogue (Detailed introduction) (4621751 rows) (Note)

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Full	_r arcsec	RAJ2000 "h:m:s"	DEJ2000 "d:m:s"	Bmag mag	mEp yr	e_RAJ2000 (...)	e_DEJ2000 arcsec	ACnum	TYC2	Vmag mag
1	1.469	21 58 42.205	-20 29 14.65	13.36	1919.795			2861682

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	0.403	0695-0855574	329.676028	-20.487681	89	43	1973.0	0	0	5	13.94	12.12	13.38	12.97	11.99

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)
ReadMe+ftp
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	0.025	24011843	329.6761406	15	-20.4877134	15	12.79	10	3	12.6	-15.6	1220634054	11.570	11.018

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	0.025	0695-0927388	YM	329.6761406	-20.4877133	C	12.5	3.7	-15.6	3.8	13.580	Y	13.150	Y	12.970	B	11.570	11.092	11.018

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	0.091	215842.2-202915		329.676167	-20.487721	12.982	1	11.570	11.092	11.018

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	0.084	SC5I000135	329.676142	-20.487684	1991.748	12.71	13.91		12.26	0	5.99	0.11

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	0.006	215842.2-202915	329.676144	-20.487709	15.77	-15.26	13.890	13.018	11.570	11.092	11.018	5		H

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	Ymag mag	W1mag mag	W2mag mag	W3mag mag	W4mag mag	NUVmag mag	a pix	e pix	PA pix
1	0.114	SC5I122738	329.67617797852	-20.48770713806	23312012122738	2013.000	3							14.398000	14.988	13.559	12.942	12.696	12.585
2	0.145	SC5I143134	329.67617073000	-20.48773898000	23312012143134	2010.300	3									16.773	13.039	13.206		12.5493					10.975	10.981	10.923	8.411	18.220
3	0.242	SC5I000135	329.67619280706	-20.48775699036	23312012135	2015.500	0	12.978176	13.817500	13.905000	12.712700	12.260800	13.961000	13.215000						12.5679	11.779	11.092	11.138	11.871						5.988	0.114	11.5

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	0.145	329.676170730	-20.487738980	83413296761735467	302145536	36	0.0092	0.0092	55234.300081020	0	20	16.7726	0.0056	16.4047	0.0043	16781336	13.0386	0.0010	13.0594	0.0010	1048	13.2058	0.0010	13.1205	0.0010	16778264					0	12.5493	0.0040	12.6140	0.0034	280
2	0.234	329.676191560	-20.487754820	83413296762095108	906289152	108	0.0063	0.0090	55800.701157410	5	68	13.4890				114724	12.9010				114724	12.6960				114724	12.6070				114724	12.5679	0.0017	12.5672	0.0016	115000

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	0.074	329.676166	-20.487709	VST-ATLAS J215842.28-202915.75	-1				13.5989	0.0005	4194432	12.9792	0.0004	4194432
2	0.077	329.676167	-20.487706	VST-ATLAS J215842.28-202915.74	-1				13.5594	0.0005		12.9423	0.0004