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HD 172300


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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

Walraven photometry of nearby southern OB associations
Homogeneous Walraven (VBLUW) photometry is presented for 5260 stars inthe regions of five nearby southern OB associations: Scorpio Centaurus(Sco OB2), Orion OB1, Canis Major OB1, Monoceros OB1, and Scutum OB2.Derived V and (B - V) in the Johnson system are included.

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Observation and Astrometry data

Constellation:Τοξότης
Right ascension:18h40m56.64s
Declination:-35°06'41.5"
Apparent magnitude:9.177
Proper motion RA:8.7
Proper motion Dec:-7.3
B-T magnitude:9.387
V-T magnitude:9.195

Catalogs and designations:
Proper Names   (Edit)
HD 1989HD 172300
TYCHO-2 2000TYC 7415-2901-1
USNO-A2.0USNO-A2 0525-37898179
HIPHIP 91607

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