A model of the origin of the solar system is described based on equations obtained from a complex electromechanical stress tensor applied to a rotating, spherical primeval protosphere containing a low-density plasma. Ionization of the protosphere stems from a supernova displaced far from the sphere but sufficiently intense to ionize the sphere. The sphere collapses under gravity to a disklike domain. The lowest-order results of the expansion of the electromechanical relations yield an inhomogeneous differential equation for the electromechanical potential function. The solutions are shown to reduce to Bessel functions. A localized perturbation of a matter ring in a trough of the electromechanical potential grows to a protoplanet. The resulting planets out to Pluto are all found to have mean radii to the Sun in good agreement with measured values. The related magnetic field components are normal to the ecliptic plane. A number of properties, including orbital resonance between adjacent planets, are proposed to lend stability to two otherwise metastable orbits. Newtonian and Coulomb interactions enter in the electromechanical equations, and a unit dimensional constant contributes to the dimensional consistency of these relations. Five intervals are defined in the formation of the solar system. It is proposed that during the third interval outer coalescing matter rings comprise the precursors of the Jovian planets and that the asteroid belt, likewise formed in this interval, defines the spatial domain separating the regular lower matter rings and the coalescing higher matter rings. It is further proposed that to compensate for an increase in angular momentum in the fourth interval, Venus goes into retrograde spin rotation. Reasonable agreement with the observed disparity between mass and angular momentum for the Sun and the planets is obtained as well. The analysis is found to imply the existence of a 10th planet at a mean radius from the Sun of ≈51 AU.