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HD 109523


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Mining in the HIPPARCOS raw data
The Hipparcos solutions flagged as unreliable after the completion ofthe standard data processing have been systematically revisited in thelight of additional information, primarily related to theirmultiplicity. In many cases improved solutions have been obtained,yielding at the same time an Hipparcos based separation and positionangle and a better astrometric solution for the system. The principlesapplied in this reprocessing are explained and more than a hundred newsolutions with absolute and relative astrometry are presented anddiscussed. Tables 1 to 7 are also available in electronic form at theCDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or viahttp://cdsweb.u-strasbg.fr/Abstract.html

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Observation and Astrometry data

Constellation:おとめ座
Right ascension:12h35m21.50s
Declination:-10°36'46.7"
Apparent magnitude:9.715
Proper motion RA:31.1
Proper motion Dec:-19.7
B-T magnitude:10.322
V-T magnitude:9.766

Catalogs and designations:
Proper Names
HD 1989HD 109523
TYCHO-2 2000TYC 5530-656-1
USNO-A2.0USNO-A2 0750-07888881
HIPHIP 61439

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