VizieR

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The 3 columns 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)

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Post annotation 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	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	GSC	RAJ2000 deg	DEJ2000 deg	PosErr arcsec	Pmag mag	e_ mag	n_	Class	Plate	Epoch yr
1	0.38	00 05 16.7256	-16 28 36.732	0583800651	001.31969	-16.47687	0.5	9.05	0.37	0	3	024M	1983.539

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.

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Post annotation 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	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	GSC	RAJ2000 deg	DEJ2000 deg	PosErr arcsec	Pmag mag	e_ mag	n_	Class	Epoch yr
1	0.27	00 05 16.7184	-16 28 36.696	0583800651	001.31966	-16.47686	0.5	9.06	0.38	0	3	1983.539

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.

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Post annotation The GSC 2.2 Catalogue (STScI, 2001)
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The Full GSC2.2.1 Catalogue (455851237 objects) (455851237 rows)

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Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	GSC2.2	RA(ICRS) deg	DE(ICRS) deg	Epoch yr	Rmag mag	e_ mag	Bjmag mag	e_ mag	Class	a pix	e
1	0.338	00 05 16.68048	-16 28 36.5196	S000131089	001.319502	-16.476811	1995.658	8.68	0.38			0	30.39	0.66

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.

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Post annotation 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	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	GSC2.3	RAJ2000 deg	DEJ2000 deg	Epoch yr	Fmag mag	jmag mag	Vmag mag	Nmag mag	Class	a pix	e
1	0.335	00 05 16.68072	-16 28 36.5160	S038000089	001.319503	-16.476810	1995.658	8.68			8.73	3	30.39	0.66

I/353/gsc242
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The Guide Star Catalog, Version 2.4.2 (GSC2.4.2) (STScI, 2020)

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2008AJ....136..735L

Guide Star Catalogue, Version 2.4.2 (original column names in green) (3485671481 rows)

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Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	GSC2	RA_ICRS deg	DE_ICRS deg	objID	Epoch yr	Class	Gmag mag	OMag mag	Bjmag mag	Fpgmag mag	Npgmag 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	NUVmag mag	a pix	e pix	PA pix
1	0.338	00 05 16.6692669962	-16 28 36.477350913	S038000089	001.31950199604	-16.47681045532	2000131089	1995.660	3		10.095500		8.684410	8.732070			15.032	13.625	13.184	12.824		13.529	12.765	12.353						30.390	0.660	24.5
2	0.348	00 05 16.7038041720	-16 28 36.863806656	S038012970	001.31959918405	-16.47690661296	2000131012970	2015.500	0	18.567957					18.667000		17.837	17.359	16.642	16.605	16.1073	11.195	10.462	10.144	10.638	10.450	6.336	4.307	16.250
3	2.731	00 05 16.7940044400	-16 28 38.920898424	S038026106	001.31997501850	-16.47747802734	2000131026106	2013.000	3						18.511999	19.976	19.417
4	2.769	00 05 16.6142177592	-16 28 34.066314696	S038016479	001.31922590733	-16.47612953186	2000131016479	2013.000	3							21.436
5	3.125	00 05 16.8950256000	-16 28 35.027148000	S038025592	001.32039594000	-16.47639643000	2000131025592		3							17.338	14.624	18.571
6	3.379	00 05 16.4791202544	-16 28 37.492675788	S038028250	001.31866300106	-16.47708129883	2000131028250	2013.000	3							22.022	18.718
7	3.801	00 05 16.9024800000	-16 28 39.025200000	S038012944	001.32042700000	-16.47750700000	2000131012944	1998.548	0							18.777	19.558						13.638	13.202
8	3.865	00 05 16.9483200000	-16 28 38.125200000	S038012942	001.32061800000	-16.47725700000	2000131012942	1998.548	0								17.734					14.358
9	4.105	00 05 16.6704940800	-16 28 32.438964828	S038014401	001.31946039200	-16.47567749023	2000131014401	2013.000	3							21.538
10	4.215	00 05 16.4340840000	-16 28 34.874904000	S038010080	001.31847535000	-16.47635414000	2000131010080	2012.432	3			12.623300				16.522	18.218	17.937	17.979											11.754	0.490	23.1

Note: The Guide Star Catalog has been constructed to support the operational need of the Hubble Space Telescope; it is primarily based on an all-sky, single epoch, single passband collection of Schmidt plates. It contains over 25 million positions for about 19 million objects, of which more than 15 million are classified as stars.

I/220/out
Post annotation The HST Guide Star Catalog, Version 1.1 (Lasker+ 1992)
ReadMe+ftp

metaI/220/out

The Full Catalogue (25258765 positions) (25258765 rows)

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Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	GSC	RAJ2000 deg	DEJ2000 deg	PosErr arcsec	Pmag mag	e_ mag	n_	Class
1	0.00	00 05 16.7040	-16 28 36.516	0583800651	1.31960	-16.47681	0.5	9.06	0.38	0	3

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