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Recent Data on IY Cygni

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Margaret G. Lysaght

Maria Mitchell Observatory, Nantucket, MA 02554

 

Abstract

 

The Cepheid variable IY Cygni was studied, and its O-C curve was found to be a straight line when compared to the original elements found by A. A. Wachmann. The new elements are JD(max) = 244005.769(+/-0.056) + 21.75661(+/-0.00070) E. Possible change over time in the mean light curve are indicated.

 

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