2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/150388We report the discovery of a low dimensional dynamical system in a 5.5 hr Hubble Space Telescope High Speed Photometer observation of a rapidly oscillating star. The topological description of the phase space orbits is given, as well as a dynamical model which describes the results. This model should motivate theorists of stellar pulsations to search for a three-dimensional system with the same topological structure to describe the mechanisms for pulsation. The equations are compatible with recently proposed nonlinear mode interaction models.6 pages, LaTex, Figures available upon request to padi@lhea1.gsfc.nasa.govAstrophysicsChaotic Dynamicstext