AAVSO: American Association of Variable Star Observers
Login

Period Changes in Eclipsing Binary Stars

Volume 16 number 1 (1987)

Download this article (pdf)

Anthony Mallama
14012 Lancaster Lane,

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.