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The 7 columns in color are computed by VizieR, and are not part of the original data.

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.

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The USNO-A2.0 Catalogue (Monet+ 1998)

The Full Catalogue (526280881 rows) (Note)
img(gal)

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Full

_r
arcsec
_RAJ2000
"h:m:s"
_DEJ2000
"d:m:s"
_RAB1950
"h:m:s"
_DEB1950
"d:m:s"
_Glon
deg
_Glat
deg
USNO-A2.0

RAJ2000
deg
DEJ2000
deg
ACTflag

Mflag

Bmag
mag
Rmag
mag
Epoch
yr
13.23522 31 41.08944-10 54 19.400422 29 02.34331-11 09 45.8468052.39000485-53.386407410750-21238938337.921206-10.905389A*11.710.91954.652

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.

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The USNO-B1.0 Catalog (Monet+ 2003)
The Whole-Sky USNO-B1.0 Catalog of 1,045,913,669 sources (1045175762 rows)
img(gal)

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Full

_r
arcsec
_RAJ2000
"h:m:s"
_DEJ2000
"d:m:s"
_RAB1950
"h:m:s"
_DEB1950
"d:m:s"
_Glon
deg
_Glat
deg
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
10.24622 31 41.32008-10 54 20.041222 29 02.34345-11 09 44.6907052.39057144-53.387306270790-0650330337.922167-10.905567 0 02000.0 70 -400 6.69 6.24 6.54 6.22 6.09

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)
img(gal)

start AladinLite
Full

_r
arcsec
_RAJ2000
"h:m:s"
_DEJ2000
"d:m:s"
_RAB1950
"h:m:s"
_DEB1950
"d:m:s"
_Glon
deg
_Glat
deg
GSC2.2

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

a
pix
e

10.24322 31 41.32032-10 54 20.030422 29 02.57431-11 09 46.4832052.39057660-53.38730555S3232132188337.922168-10.9055641991.140     6.73 0.010    

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)

start AladinLite
Full

_r
arcsec
_RAJ2000
"h:m:s"
_DEJ2000
"d:m:s"
_RAB1950
"h:m:s"
_DEB1950
"d:m:s"
_Glon
deg
_Glat
deg
GSC2.3

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

a
pix
e

10.23822 31 41.32056-10 54 20.016022 29 02.57455-11 09 46.4688052.39058318-53.38730432SBRY003817337.922169-10.9055602000.000     6.38  0    
20.23822 31 41.32056-10 54 20.016022 29 02.57455-11 09 46.4688052.39058318-53.38730432SBRY013626337.922169-10.9055602000.000     6.38  0    
30.23822 31 41.32056-10 54 20.016022 29 02.57455-11 09 46.4688052.39058318-53.38730432SBRY013061337.922169-10.9055602000.000     6.38  0    
40.23822 31 41.32056-10 54 20.016022 29 02.57455-11 09 46.4688052.39058318-53.38730432SBRY012670337.922169-10.9055602000.000     6.38  0    
50.23822 31 41.32056-10 54 20.016022 29 02.57455-11 09 46.4688052.39058318-53.38730432SBRY011726337.922169-10.9055602000.000     6.38  0    
60.23822 31 41.32056-10 54 20.016022 29 02.57455-11 09 46.4688052.39058318-53.38730432SBRY010299337.922169-10.9055602000.000     6.38  0    
70.24222 31 41.32056-10 54 20.023222 29 02.57455-11 09 46.4760052.39058032-53.38730535SBRY000188337.922169-10.9055622000.000     6.42  0    
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