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New unfiltered photoelectric observations of the K-type contact binary V523 Cas were obtained at Flower and Cook Observatory on ten nights in 1979. Fourteen times of minimum light were observed and the light ephemeris has been improved. The light curve was analyzed using both the Wilson-Devinney and Binnendijk codes, the results of which indicate V523 Cas to be an overcontact, W-type system.
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D. H. Bradstreet (1981) studied this question.
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