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Period changes in eclipsing binary stars observed by amateurs

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Anthony Mallama

14012 Lancaster Lane, Bowie, MD 20715

 

Received 28 April 1987

 

Abstract

 

Recent period changes in UU And, SW Cyg, TY Del, TW Dra, TU Her, Z Per, and Y Psc have been revealed by visual times of minima obtained over the past two decades. New ephemerides are reported for these stars.

 

Link to ADS abstract, article and citation information

 
 
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