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eJAAVSO

ST Ursae Majoris: An Interesting Binocular Variable Star

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Christopher P. Stephan

Science Department, Sebring Middle School, Sebring, FL 33870

 

Abstract

 

Observations of the semiregular star, ST Ursae Majoris, show an approximate period of 81 days. However, there are occasions when the period is as log as approximately 120 days or as short as approximately 60 days. In 1980-81, one cycle lasted approximately 150 days.

 

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