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HD 225237


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Radial-velocity measurements. V - Ground support of the HIPPARCOS satellite observation program
The paper presents data on 1070 radial velocity measurements of starsdistributed in 39 fields measuring 4 deg x 4 deg. The PPO series ofFehrenbach et al. (1987) and Duflot et al. (1990) is continued using theFehrenbach objective prism method.

New optical positions and proper motions of late type stars associated with SiO masers
The 33 cm astrograph of the Bordeaux Observatory has been used to derivewith respect to AGK3 reference stars, accurate positions of late typevariable stars variable stars associated with strong SiO maser emission.It is suggested that selected maser stars can be used to link theHIPPARCOS system and the VLBI extragalactic reference frame. The propermotions of the program (SiO) and reference stars are derived and, forthe program stars, are compared to the McCormick catalog of propermotions.

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Osservazione e dati astrometrici

Costellazione:Cassiopea
Ascensione retta:00h04m44.45s
Declinazione:+51°32'01.8"
Magnitudine apparente:8.704
Distanza:406.504 parsec
Moto proprio RA:8.5
Moto proprio Dec:-6.5
B-T magnitude:8.689
V-T magnitude:8.703

Cataloghi e designazioni:
Nomi esatti   (Edit)
HD 1989HD 225237
TYCHO-2 2000TYC 3258-1528-1
USNO-A2.0USNO-A2 1350-00089117
HIPHIP 381

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