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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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The HST Guide Star Catalog, Version 1.2 (Lasker+ 1996)
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
10.9810 10 03.9432-12 34 52.6080548500241152.51643-12.58128 0.410.55 0.40 0301X41983.106
21.6510 10 03.9648-12 34 53.2200548500241152.51652-12.58145 0.510.42 0.40 0003YC1984.307
32.1810 10 04.0416-12 34 52.3200548500241152.51684-12.58120 2.610.63 0.40 0301851983.349
42.6210 10 04.0320-12 34 53.6160548500241152.51680-12.58156 1.010.96 0.40 0300OH1982.065

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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The HST Guide Star Catalog, Version GSC-ACT (Lasker+ 1996-99)

The GSC-ACT Full Catalogue (25241730 positions) (25241730 rows)
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Full

_r
arcsec
_RAJ2000
"h:m:s"
_DEJ2000
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GSC

RAJ2000
deg
DEJ2000
deg
PosErr
arcsec
Pmag
mag
e_
mag
n_

Class

Epoch
yr
10.7910 10 03.9384-12 34 52.3920548500241152.51641-12.58122 0.410.57 0.42 031983.106
21.4610 10 03.9648-12 34 52.9680548500241152.51652-12.58138 0.510.44 0.43 001984.307
31.6010 10 03.9960-12 34 52.5360548500241152.51665-12.58126 2.610.66 0.40 031983.349
43.2410 10 04.0368-12 34 54.4080548500241152.51682-12.58178 1.010.96 0.40 031982.065

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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The GSC 2.2 Catalogue (STScI, 2001)

The Full GSC2.2.1 Catalogue (455851237 objects) (455851237 rows)
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Full

_r
arcsec
_RAJ2000
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GSC2.2

RA(ICRS)
deg
DE(ICRS)
deg
Epoch
yr
Rmag
mag
e_
mag
Bjmag
mag
e_
mag
Class

a
pix
e

11.25810 10 03.96216-12 34 52.7124S1211112208152.516509-12.5813091986.255 9.17 0.4210.75 0.280 17.68 0.13

Note: This version of the GSC-II has no proper motions, but the limits on brightness which existed on GSC2.2 (F<18.5, Bj<19.5) were removed.

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The Guide Star Catalog, Version 2.3.2 (GSC2.3) (STScI, 2006)
The Full GSC2.3.2 Catalogue (945592683 objects) (945592683 rows)
img(gal)

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Full

_r
arcsec
_RAJ2000
"h:m:s"
_DEJ2000
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GSC2.3

RAJ2000
deg
DEJ2000
deg
Epoch
yr
Fmag
mag
jmag
mag
Vmag
mag
Nmag
mag
Class

a
pix
e

11.25610 10 03.96240-12 34 52.7052S506000208152.516510-12.5813071986.255 9.1710.75  11.643 17.68 0.13

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.

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The HST Guide Star Catalog, Version 1.1 (Lasker+ 1992)

The Full Catalogue (25258765 positions) (25258765 rows)
img(gal)

start AladinLite
Full

_r
arcsec
_RAJ2000
"h:m:s"
_DEJ2000
"d:m:s"
GSC

RAJ2000
deg
DEJ2000
deg
PosErr
arcsec
Pmag
mag
e_
mag
n_

Class

10.0010 10 03.8952-12 34 51.9240548500241152.51623-12.58109 0.410.57 0.42 03
21.0110 10 03.9432-12 34 52.6440548500241152.51643-12.58129 0.510.44 0.43 00
32.2510 10 04.0176-12 34 53.2920548500241152.51674-12.58147 1.010.96 0.40 03
42.5710 10 04.0680-12 34 52.3920548500241152.51695-12.58122 2.610.66 0.40 03
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