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 The Full Catalogue (526280881 rows) (Note)

Full	USNO-A2.0	RAJ2000 deg	DEJ2000 deg	ACTflag	Mflag	Bmag mag	Rmag mag	Epoch yr
1	1125-12499742	291.080014	+24.133909			17.0	14.8	1950.539

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) ReadMe+ftp The Full GSC2.2.1 Catalogue (455851237 objects) (455851237 rows)

Full	GSC2.2	RA(ICRS) deg	DE(ICRS) deg	Epoch yr	Rmag mag	e_ mag	Bjmag mag	e_ mag	Class	a pix	e
1	N0230010157791	291.080014	+24.133707	1986.669	14.27	0.36	16.66	0.36	3	4.74	0.25

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 The Whole-Sky USNO-B1.0 Catalog of 1,045,913,669 sources (1045913669 rows)

Full	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	1141-0365883	291.079712	+24.134467	85	461	1974.1	0	0	5	18.43	14.64	17.53	13.90	11.92
2	1141-0365886	291.080053	+24.133898	57	162	1974.1	0	0	5	17.58	14.59	17.09	14.34	12.53

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 The NOMAD-1 Catalog (1117612732 rows)

Full	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	1141-0374168	..	291.0797111	+24.1344667	B	0.0	0.0	0.0	0.0	17.530	B			13.900	B
2	1141-0374172	YM	291.0800528	+24.1338972	B	0.0	0.0	0.0	0.0	17.090	B	15.430	Y	14.340	B	12.701	11.951	11.708

Note: Zone -30/+50deg

I/304/out

Carlsberg Meridian Catalog 14 (CMC14) (CMC, 2006) ReadMe+ftp The full CMC-14 catalog (around 95.85million source in the region -30 to +50°) (95858475 rows)

Full	CMC14	f_	RAJ2000 deg	DEJ2000 deg	r'mag mag	Nt	Jmag mag	Hmag mag	Ksmag mag
1	192419.1+240800		291.079989	+24.133599	15.243	3	12.701	11.952	11.709

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

Full	GSC2.3	RAJ2000 deg	DEJ2000 deg	Epoch yr	Fmag mag	jmag mag	Vmag mag	Nmag mag	Class	a pix	e
1	N26C157791	291.080014	+24.133708	1986.669	14.27	16.66	14.73	13.56	3	4.74	0.25

I/317/sample

The PPMXL Catalog (Roeser+ 2010) ReadMe+ftp 2010AJ....139.2440R PPMXL catalog of positions and proper motions on the ICRS (910469430 rows)

Full	RAJ2000 deg	DEJ2000 deg	pmRA mas/yr	pmDE mas/yr	Jmag mag	Kmag mag	b1mag mag	b2mag mag	r1mag mag	r2mag mag	imag mag	No	fl
1	291.079694	+24.134467	-5.5	-10.2			18.43	17.53	14.64	13.90	11.92	5	1
2	291.080008	+24.133642	-7.9	-22.7	12.701	11.709	17.58	17.09	14.59	14.34	12.53	6	1

Note: see the UCAC4 document, and the the fix for high proper motion stars. The UCAC home page is available at http://www.usno.navy.mil/USNO/astrometry/optical-IR-prod/ucac.
Please acknowledge the usage of the UCAC4

I/322A/out

UCAC4 Catalogue (Zacharias+, 2012) ReadMe+ftp 2012yCat.1322....0Z Fourth U.S. Naval Observatory CCD Astrograph Catalog (113780093 rows)

Full	UCAC4	RAJ2000 deg	DEJ2000 deg	ePos mas	f.mag mag	of	db	pmRA mas/yr	pmDE mas/yr	Jmag mag	Kmag mag	Bmag mag	Vmag mag	rmag mag	imag mag	H	A	b	h	Z	B	L	N	S
1	571-086108	291.0800198	+24.1336337	65	15.247	0	0	-1.0	-30.6	12.701	11.709	17.035	15.745	15.206	14.401	0	0	0	0	0	0	0	1	0

II/246/out

2MASS All-Sky Catalog of Point Sources (Cutri+ 2003) ReadMe+ftp The Point Source catalogue of 470,992,970 sources. Please acknowledge the usage of the 2MASS All-Sky Survey; see also the 2MASS Pages.    Note that the magnitudes in red correspond to low quality results (upper limits or very poor photometry) (470992970 rows)

Full	RAJ2000 deg	DEJ2000 deg	2MASS	Jmag mag	e_Jmag mag	Hmag mag	e_Hmag mag	Kmag mag	e_Kmag mag	Qflg	Rflg	Bflg	Cflg	Xflg	Aflg
1	291.080001	+24.133604	19241920+2408009	12.701	0.024	11.952	0.026	11.709	0.021	AAA	222	111	000	0	0

The 2 columns in color are computed by VizieR, and are not part of the original data.

Note:

II/311/wise

WISE All-Sky Data Release (Cutri+ 2012) ReadMe+ftp 2012yCat.2311....0C The WISE All-Sky data Release; please acknowledge the usage of the WISE data products (563921584 rows)

Full	WISE	RAJ2000 deg	DEJ2000 deg	eeMaj arcsec	eeMin arcsec	Im	W1mag mag	e_ mag	W2mag mag	e_ mag	W3mag mag	e_ mag	W4mag mag	e_ mag	Jmag mag	Hmag mag	Kmag mag	ccf	ex	var	d2M arcsec	2M
1	J192419.18+240801.2	291.079957	+24.133686	0.083	0.080	Im	11.525	0.024	11.670	0.022	11.121	0.092	9.057		12.701	11.952	11.709	dd00	0	nnnn	0.328	2M

Note:

II/316/gps6

UKIDSS-DR6 Galactic Plane Survey (Lucas+ 2012) ReadMe+ftp 2008MNRAS.391..136L UKIDSS-DR6 Galactic Plane Survey (557,877,373 unique sources) (604327143 rows)

Full	UGPS	m	RAJ2000 deg	DEJ2000 deg	Jmag mag	e_ mag	Hmag mag	e_ mag	Kmag1 mag	e_ mag	Kmag2 mag	e_ mag	H2mag mag	e_ mag	cl	p*
1	J192419.20+240805.7	1	291.080022	+24.134929					15.059	0.013					-1	0.90
2	J192418.94+240801.5	1	291.078935	+24.133766					17.942	0.179					-1	0.90
3	J192419.20+240800.9	1	291.080011	+24.133589					11.710	0.001					-1	0.90
4	J192419.52+240801.4	1	291.081366	+24.133749					16.185	0.036					-1	0.90