ejaavso402941

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Dirk Terrell
Department of Space Studies, Southwest Research Institute, 1050 Walnut Street, Suite 300, Boulder, CO 80302

John Gross
Sonoita Research Observatory, 1442 E. Roger Road, Tucson, AZ 85719

Received October 6, 2011; revised October 17, 2011; accepted November 17, 2011

Abstract

Observations and analysis of GSC 4552-1642 are presented and the system is shown to be a W UMa system with complete eclipses. The total/annular nature of the eclipses results in a photometric mass ratio that should be reliable but the light curves do have appreciable amounts of third light.