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TYC 2146-206-1


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Photometry and analysis of the eclipsing binary V909 Cygni
The first photoelectric observations of the photometrically neglectedeclipsing binary V909 Cygni in blue and yellow colours are presented. Itwas found that the orbital period of the system should be twice that ofgiven in the catalogues. The light curves were analysed by means ofWood's model simulation program WINK. The system was found to be adetached binary.

A Search for Metal-Deficient Stars
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Observation and Astrometry data

Constellation:Cygnus
Right ascension:19h36m32.73s
Declination:+28°06'39.1"
Apparent magnitude:9.817
Proper motion RA:-15.1
Proper motion Dec:-21.6
B-T magnitude:10.275
V-T magnitude:9.855

Catalogs and designations:
Proper Names   (Edit)
TYCHO-2 2000TYC 2146-206-1
USNO-A2.0USNO-A2 1125-13424923
HIPHIP 96450
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