VizieR

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

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	6.08	0442501860	242.62389	+73.90789	0.2	14.88	0.40	1	0	01L6	1983.292

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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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	5.99	0442501860	242.62380	+73.90790	0.2	14.91	0.40	1	0	1983.292

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	2.023	N1102232308	242.621322	+73.908763	1994.417	14.17	0.42	16.29	0.41	0	4.48	0.04

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	0.222	1639-0094464	242.619953	+73.909256	75	40	1978.2	-226	270	5	17.07	14.44	16.39	14.10	12.42

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	0.221	1639-0095467	.M	242.6199528	+73.9092556	B	-226.0	2.0	270.0	1.0	16.390	B			14.100	B	10.682	10.103	9.852	*

I/298/lspm_n

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	Bjmag mag	Fpgmag mag	Npgmag mag	Bmag mag	Vmag 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	NUVmag mag	a pix	e pix	PA pix
1	1.726	N432032770	242.61897057387	+73.90957518886	1110223232770	2006.000	4																			22.336
2	2.032	N432000308	242.62132263184	+73.90876007080	11102232308	1994.420	0		16.286600	14.172100	12.244200								10.683	10.104	9.852						4.485	0.044	4.9
3	5.448	N432013707	242.61656225585	+73.91036523937	1110223213707	2015.500	0	13.795159				17.113001	15.223000	15.935	14.675	13.069	12.314	12.0046				9.621	9.437	9.317	9.446

Full	_r arcsec	Star	Name	RAJ2000 deg	DEJ2000 deg	mag mag	Nobs	Nrej	plx mas	pmRA mas/yr	pmDE mas/yr	URAT	UCAC4	APASS	Jmag mag	Hmag mag	Ksmag mag	Bmag mag	Vmag mag	Note	N	SimbadName
1	4.930	New	G 257-30	242.6168689	+73.9102486	13.39	152	1	50.4	-221.3	269.5	0	1	0				17.113	15.223			G 257-30
2	5.080	Prev	LP 42-305	242.6168719	+73.9103031	13.30	152	1	50.4	-221.3	269.5	0	1	0	10.683	10.104	9.852	17.113	15.223			LP 42-305

Full	_r arcsec	GaiaDR2	Gmag mag	RA_ICRS deg	DE_ICRS deg	AllWISE	W1mag mag	e_ mag	W2mag mag	e_ mag	W3mag mag	e_ mag	W4mag mag	e_ mag	RAAdeg deg	DEAdeg deg	WISEProb	WISESep arcsec	_RA.icrs deg	_DE.icrs deg
1	5.448	1702586956678820480	13.795200	242.61656225585	+73.91036523937	J161028.23+735435.9	9.621	0.022	9.437	0.019	9.317	0.029	9.446	0.353	242.6176665	73.9099983	0.9998781	0.1440901	242.61656225585	+73.91036523937
2	5.448	1702586956678820480	13.795200	242.61656225585	+73.91036523937	J161030.59+735440.5	14.363	0.038	14.259	0.042	12.750		9.275		242.6274662	73.9112528	0.0657403	10.7390626	242.61656225585	+73.91036523937