VizieR

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The 1 column in color are computed by VizieR, and are not part of the original data.

Note: USNO-A1.0 contains 488,006,860 sources, and was compiled from the blue/red overlaps of the detection lists generated from scans of POSS-I O and E plates (>=-30°) and SRC-J and ESO-R plates (<=-35°). USNO-A1.0 was created by Dave Monet () and collaborators at Flagstaff Station, U.S. Naval Observatory; it is superseded by the new PMM-USNO-A2.0 version.
The VizieR search engine uses an on-line compressed version (3.4Gbytes) which was generated at CDS.

I/243/out The PMM USNO-A1.0 Catalogue (Monet 1997)
ReadMe+ftp

metaI/243/out

The Full Catalogue (488006860 rows) (Note)

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Full	_r arcsec	USNO-A1.0	RA_ICRS deg	DE_ICRS deg	GSCflag	Mflag	Bmag mag	Rmag mag	Epoch yr
1	6.113	1500-06000084	234.099534	+63.899948			18.6	17.3	1955.372

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	6.664	1500-05947918	234.099931	+63.899989			17.9	17.3	1955.372

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	9.789	15 36 21.570	+63 53 59.69	10.13	1897.104	0.109	0.400	1844353	418400000801	9.710

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	4.591	1538-0203016	234.098545	+63.899998	244	308	1967.4	-40	-4	3	18.80	17.38			17.35
2	1.724	1539-0198797	234.096350	+63.900084	391	29	1974.9	0	0	2	17.03			14.48
3	2.222	1539-0198798	234.096934	+63.900103	999	419	1973.4	0	0	2		17.97			15.91
4	7.672	1539-0198799	234.100606	+63.900014	312	375	1974.9	0	0	2		17.65		18.42
5	9.789	1539-0198800	234.102081	+63.900523	86	51	1979.7	60	288	3		18.47	18.91		18.53

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	RAJ2000 deg	DEJ2000 deg	YM	r	pmRA mas/yr	e_ (...)	pmDE mas/yr	e_ (...)	Bmag mag	r_	Rmag mag	r_
1	4.592	1538-0208214	234.0985444	+63.8999972	..	B	-40.0	6.0	-4.0	8.0	18.800	o	17.380	e
2	1.726	1539-0204047	234.0963500	+63.9000833	..	B	0.0	0.0	0.0	0.0	17.030	o	14.480	B
3	2.221	1539-0204048	234.0969333	+63.9001028	..	B	0.0	0.0	0.0	0.0			17.970	e
4	7.672	1539-0204049	234.1006056	+63.9000139	..	B	0.0	0.0	0.0	0.0			18.420	B
5	9.789	1539-0204050	234.1020806	+63.9005222	..	B	60.0	3.0	288.0	1.0	18.910	B	18.470	e

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	RAJ2000 deg	DEJ2000 deg	pmRA mas/yr	pmDE mas/yr	b1mag mag	b2mag mag	r1mag mag	r2mag mag	imag mag	No
1	2.404	234.094951	+63.899999	-75.3	-12.8			17.97		15.91	2
2	1.896	234.096118	+63.900002	-12.7	-1.7	17.03			14.48		2
3	4.781	234.098587	+63.899915	-41.8	-7.5	18.80		17.38		17.35	3
4	7.876	234.100681	+63.899918	4.7	-11.3			17.65	18.42		2
5	9.819	234.102098	+63.900452	55.7	287.1		18.91	18.47		18.53	3

Full	_r arcsec	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	6.243	234.099321	+63.899658	0.024	0.024	18.800	0.400	17.380	0.400	17.622	0.400	16.509	0.500	2004.4500	2004.4500	-41.8	7.8	-7.5	7.8
2	9.819	234.102098	+63.900452	0.133	0.133	18.910	0.400	18.470	0.400	18.573	0.400	18.155	0.500	1979.7500	1979.7500	55.7	7.7	287.1	7.7
3	1.897	234.096118	+63.900002	0.163	0.163	17.030	0.400	14.480	0.400	14.482	0.400	12.736	0.500	1974.9100	1974.9100	-12.7	8.3	-1.7	8.3

Full	_r arcsec	GSC2	RA_ICRS deg	DE_ICRS deg	objID	Epoch yr	Class	Gmag mag	OMag mag	Bjmag mag	Fpgmag mag	Epgmag mag	Npgmag mag	Umag mag	Bmag mag	Vmag mag	umag mag	gmag mag	rmag mag	imag mag	zmag mag	ymag mag	Jmag mag	Hmag mag	Ksmag mag	Zmag mag	Ymag mag	W1mag mag	W2mag mag	W3mag mag	W4mag mag	FUVmag mag	NUVmag mag	a pix	e pix	PA pix
1	6.173	N4Q5024496	234.09967526974	+63.90009384767	1113323124496	2004.454	3										24.635	25.114	24.802	21.973	22.827
2	6.099	N4Q5031911	234.09920337059	+63.89964904312	1113323131911	2004.454	3										24.409	25.114	20.500	21.026	22.827

Full	_r arcsec	objID	RA_ICRS deg	DE_ICRS deg	mode	q_	cl	SDSS9	m_	Im	ObsDate yr	Q	umag mag	e_ mag	gmag mag	e_ mag	rmag mag	e_ mag	imag mag	e_ mag	zmag mag	e_ mag	zsp
1	6.099	1237665583246803023	234.099203	+63.899649	1	+	3	J153623.80+635358.7		Im	2004.4552	3	24.409	1.094	25.114	0.672	20.510	0.036	21.032	0.076	22.827	0.812
2	6.172	1237665583246803024	234.099675	+63.900094	1		6	J153623.92+635400.3		Im	2004.4552	3	24.635	1.116	25.114	0.631	24.802	0.782	21.978	0.161	22.827	0.785

Full	_r arcsec	LSXPS	ExtCat	Cat	D arcsec	ExtRA deg	ExtDE deg	ExtErr90 arcsec
1	8.71	179876	2SXPS J153621.6+635402	2SXPS	0.80	234.09041	+63.90066	5.4
2	1.74	179876	1539.0198797	USNOB1	10.32	234.09635	+63.90008