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HD 22280


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Mesures et decouvertes d'etoiles doubles effectuees a la lunette de 50cm de l'Observatoire de Nice. Measures and discoveries of visual double stars made with the 50cm refractor at the Nice Observatory.
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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.

Visual multiples. VIII - 1000 MK types
A total of 1000 new classifications are given for stars brighter than B= 8.0 mag in the Aitken double star catalog. The classificationssupplement 865 classifications obtained in 1981 and 1984. Among thenewly discovered stars are 12 new Ap stars, eight Lambda Bootis stars,one Ba II star, and 60 Am stars. A detailed list of the newclassifications is given.

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Osservazione e dati astrometrici

Costellazione:Toro
Ascensione retta:03h36m11.35s
Declinazione:+29°58'59.9"
Magnitudine apparente:7.647
Distanza:109.89 parsec
Moto proprio RA:4.8
Moto proprio Dec:-18.7
B-T magnitude:7.846
V-T magnitude:7.664

Cataloghi e designazioni:
Nomi esatti   (Edit)
HD 1989HD 22280
TYCHO-2 2000TYC 1810-433-1
USNO-A2.0USNO-A2 1125-01181018
HIPHIP 16795

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