1930 20160701171655.0 ASTROimport-87 Wils, P. 2003 A New Double-Mode High-Amplitude delta Scuti Star: GSC 2583-00504 CCD-V photometric data show that GSC 2583-00504 is a new high-amplitude double-mode Delta Scuti variable with a fundamental period of 0.05172 days and a period ratio of 0.773, closely resembling the prototype SX Phe. Lampens, P. Robertson, C. W. van Cauteren, P. Information Bulletin on Variable Stars 5442 2003 1 http://esoads.eso.org/abs/2003IBVS.5442....1W published in REFERD