Period Changes in Eclipsing Binary Stars
Volume 16 number 1 (1987)
- 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.