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HD 47799


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Vitesses radiales. Catalogue WEB: Wilson Evans Batten. Subtittle: Radial velocities: The Wilson-Evans-Batten catalogue.
We give a common version of the two catalogues of Mean Radial Velocitiesby Wilson (1963) and Evans (1978) to which we have added the catalogueof spectroscopic binary systems (Batten et al. 1989). For each star,when possible, we give: 1) an acronym to enter SIMBAD (Set ofIdentifications Measurements and Bibliography for Astronomical Data) ofthe CDS (Centre de Donnees Astronomiques de Strasbourg). 2) the numberHIC of the HIPPARCOS catalogue (Turon 1992). 3) the CCDM number(Catalogue des Composantes des etoiles Doubles et Multiples) byDommanget & Nys (1994). For the cluster stars, a precise study hasbeen done, on the identificator numbers. Numerous remarks point out theproblems we have had to deal with.

Visual measures of 193 double and multiple stars
Micrometer measurements of 174 double stars obtained with 26 1/2-in. and10-in. refractors are presented, along with interferometric measurementsof 19 double stars performed using 20-in. and 36-in. reflectors. Theresults reported include star coordinates, position angles, separations,probable errors, orbital residuals, and identifications of wide doubleswith separations of up to 2 arcmin.

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Osservazione e dati astrometrici

Costellazione:Unicorno
Ascensione retta:06h40m15.77s
Declinazione:-04°27'40.8"
Magnitudine apparente:7.253
Distanza:309.598 parsec
Moto proprio RA:-5.4
Moto proprio Dec:0.7
B-T magnitude:9.273
V-T magnitude:7.42

Cataloghi e designazioni:
Nomi esatti   (Edit)
HD 1989HD 47799
TYCHO-2 2000TYC 4807-188-1
USNO-A2.0USNO-A2 0825-02902841
HIPHIP 31921

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