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eJAAVSO

Sorting Out the Period of XY Cassiopeiae

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James D. Fahn

Maria Mitchell Observatory

Nantucket, MA 02554

 

Abstract

 

A survey of Harvard College Observatory and Maria Mitchell Observatory plates was undertaken to clear up confusion surrounding the period of the 10th magnitude Cepheid, XY Cassiopeiae. New elements indicate a probable decrease in the period but do not confirm other period changes referred to in earlier studies.

 

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