  The Einstein equations are solved algebraically to model a hybrid
astrophysical compact object consisting of a preon gas core, a mantle of
electrically charged hot quark-gluon plasma, and an outer envelope of charged
hadronic matter which is matched to an exterior Reissner-Nordstrom vacuum. The
piecewise-continuous metric and the pressure and density functions consist of
polynomials that are everywhere well-behaved. Boundary conditions at each
interface yield estimates for physical parameters applicable to each layer, and
to the star as a whole.
