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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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The HST Guide Star Catalog, Version 1.2 (Lasker+ 1996)
The Full Catalogue (25241730 positions) (25241730 rows)
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_r
arcsec
_RAJ2000
"h:m:s"
_DEJ2000
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GSC

RAJ2000
deg
DEJ2000
deg
PosErr
arcsec
Pmag
mag
e_
mag
n_

Class

Plate

Epoch
yr
10.0000 29 38.3640+00 24 36.4320000300646007.40985+00.41012 0.411.67 0.37 0300WS1982.845

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"
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GSC

RAJ2000
deg
DEJ2000
deg
PosErr
arcsec
Pmag
mag
e_
mag
n_

Class

Epoch
yr
10.1800 29 38.3712+00 24 36.5760000300646007.40988+00.41016 0.411.70 0.37 031982.845

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
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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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_r
arcsec
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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

10.91100 29 38.40768+00 24 37.0656N320012177007.410032+00.4102961987.64210.84 0.0011.43 0.383 15.79 0.36

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.

I/305/out
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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)
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GSC2.3

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

a
pix
e

10.97700 29 38.39736+00 24 37.2708NB2X000077007.409989+00.4103531987.64210.9311.43  12.753 15.79 0.36
I/353/gsc242
Post annotation
The Guide Star Catalog, Version 2.4.2 (GSC2.4.2) (STScI, 2020)
Guide Star Catalogue, Version 2.4.2 (original column names in green) (3485671481 rows)
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_r
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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
10.84600 29 38.4170400000+00 24 36.720000000NB2X016955007.41007100000+00.41020000000 13200121169552000.6150                               13.507 12.968 12.936                      
20.90500 29 38.3863374196+00 24 37.479321886NB2X000077007.40990983000+00.41036407000 13200121772011.7143  10.97590011.42720010.931200  12.754700      16.29618.81518.91818.93918.27417.9351 13.835 13.699 13.171    13.84113.74810.665 8.14717.01316.744 15.791 0.361116.3
31.78600 29 38.3841600000+00 24 34.671600000NB2X066726007.40993400000+00.40963100000 13200121667262015.5023                    18.270                                    
42.52600 29 38.5304208000+00 24 36.047556000NB2X061255007.41054342000+00.41001321000 13200121612552011.6253                          19.548                              
53.37800 29 38.2203933312+00 24 33.830521200NB2X047061007.40925163888+00.40939736700 13200121470612012.0003                                 20.372                        
63.54700 29 38.1958380720+00 24 38.925736164NB2X023462007.40914932530+00.41081270449 13200121234622001.8803                  22.14622.13022.17122.54622.832                              
74.65200 29 38.6695200000+00 24 35.629200000NB2X066532007.41112300000+00.40989700000 13200121665322014.5553                        17.830                                

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)

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

10.4800 29 38.3856+00 24 36.7920000300646 7.40994 0.41022 0.411.70 0.37 03
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