VizieR

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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.
Full

_r
arcsec
_RAJ2000
"h:m:s"
_DEJ2000
"d:m:s"
TICID1

TICID2

RAJ2000
"h:m:s"
DEJ2000
"d:m:s"
ePos
10mas
e_
mag
Bmag
mag
e_
mag
Vmag
mag
Flag1

1 4.83509 56 10.18733-09 23 50.89005479 134209 56 10.187-09 23 50.89 124 0.0112.50   0.000
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_DEJ2000
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Name

RAB1950
"h:m:s"
DEB1950
"d:m:s"
bmag
mag
Nfields

Flag1

Flag2

Flag3

_RA.icrs
"h:m:s"
_DE.icrs
"d:m:s"
1 4.67209 56 10.17269-09 23 51.0682-09.034909 53 42.094-09 09 34.3616.15100009 56 10.173-09 23 51.07
%0a%0a%3cP%3e%0a%3cFONT%20SIZE=%27-1%27%3e%3cEM%3e%3cFONT%20COLOR=%27#0000FF%27>%3cB%3eNote:%20%25
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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dec Full

_r
arcsec
_RAJ2000
"h:m:s"
_DEJ2000
"d:m:s"
USNO-A2.0

RAJ2000
deg
DEJ2000
deg
ACTflag

Mflag

Bmag
mag
Rmag
mag
Epoch
yr
1 4.79309 56 10.19280-09 23 50.13240750-07077146149.042470-09.397259    14.312.11955.955

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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GSC

RAJ2000
deg
DEJ2000
deg
PosErr
arcsec
Pmag
mag
e_
mag
n_

Class

Plate

Epoch
yr
1 4.3509 56 10.1592-09 23 50.4960547901342149.04233-09.39736 1.212.38 0.40 0301X41983.106
%0a%0a%3cP%3e%0a%3cFONT%20SIZE=%27-1%27%3e%3cEM%3e%3cFONT%20COLOR=%27#0000FF%27>%3cB%3eNote:%20The%20%3cB%3eGSC-ACT%20%3cEM%3e%28or%20%3cB%3eGSC1.3%29%0ais%20a%20recalibration%20of%20the%20%3cB%3e<%25E%20I%2f220%7cGSC1.1>,%20the%20catalogue%20constructed%20%0ato%20support%20the%20operational%20need%20of%20the%20Hubble%20Space%20Telescope,%0awith%20the%20%3cB%3e<%25E%20I%2f246%7cACT>,%20the%20combination%20of%20the%20Astrographic%20Catalogue%0aand%20the%20%3cB%3e%3cEM%3eTycho%20catalogue%20derived%20from%20the%20%3cEM%3e<%25E%20I%2f239%7cHipparcos>%0amission;%20see%20http:%2f%2fwww.projectpluto.com%2fgsc_act.htm%20for%20more%20details%0aabout%20this%20recalibration.%0a%3cP%3e%0a
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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

Epoch
yr
1 4.4209 56 10.1664-09 23 50.3160547901342149.04236-09.39731 1.212.39 0.40 031983.106
%0a%0a%3cP%3e%0a%3cFONT%20SIZE=%27-1%27%3e%3cEM%3e%3cFONT%20COLOR=%27#0000FF%27>%3cB%3eNote:%20The%20construction%20of%20the%20%0a%3cB%3eGSC-II%20%0ais%20still%20in%20progress:%20this%0aversion%20has%20no%20proper%20motions,%20and%20the%20magnitude%20limits%20are%2018.5%20in%20F%20%28red%29%0aand%2019.5%20in%20J%20%28blue%29.%20The%20data%20are%20%3cB%3e%3cFONT%20COLOR=%27#0000CD%27>copyrighted,%20check%20%0athe%20%3cB%3edata%20use%20Policy.%0a%3cP%3e%0a