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HD 201759


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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.
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The photometric study of an early-type reverse Algol system - V1425 Cygni
New UBV observations of V1425 Cyg were obtained, showing that the systemconsists of two B-type components exhibiting Beta Lyrae-type lightcurves. An improved orbital period of 1.2523879 for the system isdetermined. Preliminary photometric parameters for a Delta V light curveare derived and photometric analyses are made. The mass ratio of thesystem is derived from a q-search procedure. Two almost identicalsolutions wth similar q are obtained: one with a detached configuration,where the hot component is only slightly detached from the criticalsurface, and the other with a semidetached configuration, where the hotcomponent is just contacting the critical surface.

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Observation and Astrometry data

Constellation:Kepheus
Right ascension:21h09m28.85s
Declination:+55°41'33.8"
Apparent magnitude:8.058
Distance:200 parsecs
Proper motion RA:9.6
Proper motion Dec:8.6
B-T magnitude:8.094
V-T magnitude:8.061

Catalogs and designations:
Proper Names   (Edit)
HD 1989HD 201759
TYCHO-2 2000TYC 3957-783-1
USNO-A2.0USNO-A2 1425-11559760
HIPHIP 104448

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