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HD 181147


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Preparing the COROT Space Mission: New Variable Stars in the Galactic Anticenter Direction
The activities related to the preparation of the asteroseismic,photometric space mission COROT are described. Photoelectricobservations, wide-field CCD photometry, uvbyβ calibrations, andfurther time series have been obtained at different observatories andtelescopes. They have been planned to complete the COROT program in thedirection of the Galactic anticenter. In addition to suitableasteroseismic targets covering the different evolutionary stages betweenzero-age main sequence and terminal-age main sequence, we discoveredseveral other variable stars, both pulsating and geometric. We comparedresults on the incidence of variability in the Galactic center andanticenter directions. Physical parameters have been obtained, andevolutionary tracks fitting them have been calculated. The peculiaritiesof some individual stars are pointed out.Based on observations collected at the San Pedro Martír, SierraNevada, Teide, La Silla, Haute-Provence, and Roque de Los Muchachos(Telescopio Nazionale Galileo and Mercator telescopes) observatories.

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Osservazione e dati astrometrici

Costellazione:Aquila
Ascensione retta:19h19m10.02s
Declinazione:+02°13'57.0"
Magnitudine apparente:8.729
Distanza:202.02 parsec
Moto proprio RA:-0.3
Moto proprio Dec:-15.8
B-T magnitude:9.186
V-T magnitude:8.767

Cataloghi e designazioni:
Nomi esatti
HD 1989HD 181147
TYCHO-2 2000TYC 468-2464-1
USNO-A2.0USNO-A2 0900-14601506
HIPHIP 94941

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