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HD 22846


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Pulkovo compilation of radial velocities for 35495 stars in a common system.
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Mesures de vitesses radiales. VII. Accompagnement AU sol DU programme d'observation DU satellite Hipparcos. Radial velocities. VII. Ground based measurements for Hipparcos.
We publish 734 radial velocities of stars distributed in 28 fields of4x4deg. We continue the PPO series (Fehrenbach et al. 1987; Duflot etal. 1990 and 1992), using the Fehrenbach objective prism method.

Precise equatorial coordinates of double and multiple systems - an astronomical support to the HIPPARCOS mission
Results are presented on determinations of precise positions (to theaccuracy required for their possible inclusion in the Hipparcos InputCatalogue) of 623 double and multiple stars (126 of them newlydiscovered) from the measurement of 39 plates taken at the ESO and theAstronomical Observatory of Torino, obtained between 1984 and 1987. Thetable includes the index number, the name of the discoverer, binarycomponent according to the designation by the Catalogue de Composantesd'etoiles Doubles et Multiples (CCDM), the magnitude of the componentsas given in the CCDM, epoch of observation, right ascension referred tothe J2000.0 equinox, declination, position angle referred to the J2000.0North Pole, angular separation, and DM and ADS numbers.

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Osservazione e dati astrometrici

Costellazione:Perseo
Ascensione retta:03h41m55.00s
Declinazione:+43°30'51.7"
Magnitudine apparente:7.605
Distanza:186.22 parsec
Moto proprio RA:18.8
Moto proprio Dec:-38.2
B-T magnitude:9.056
V-T magnitude:7.725

Cataloghi e designazioni:
Nomi esatti
HD 1989HD 22846
TYCHO-2 2000TYC 2875-554-1
USNO-A2.0USNO-A2 1275-02574397
HIPHIP 17271

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