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HD 214876


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A photometric study of W UMa-type binary BC Gru
UBVR cIc light curves were obtained for the W UMa-type system BC Gru.Five times of minima were determined and ephemeris was derived. Anoptimization procedure aimed at solving binary light curves ispresented. An application to BC Gru data illustrates the operation ofthe method. The present analysis indicates that BC Gru is a contactbinary with the mass ratio of 1.77 +/- 0.49 and an inclination of 66.9+/- 2.8.

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Observation and Astrometry data

Constellation:Grus
Right ascension:22h42m07.95s
Declination:-48°10'32.1"
Apparent magnitude:8.819
Distance:383.142 parsecs
Proper motion RA:-8.7
Proper motion Dec:1.9
B-T magnitude:10.441
V-T magnitude:8.953

Catalogs and designations:
Proper Names
HD 1989HD 214876
TYCHO-2 2000TYC 8449-402-1
USNO-A2.0USNO-A2 0375-39997975
HIPHIP 112081

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