We analyze the static gravitational field of a body (the string star) made of a large number of massive scalar states of the superstring. We consider two cases, one in which these states are neutral string excitations, massive already in ten dimensions, and one in which their masses (and charges) originate in the process of compactification on tori. In both cases the gravitational field is modified by the presence of other massless fields that couple to the string star matter. These fields, and the strength of their couplings, are fixed by superstring perturbation theory and may be infered by studying the scattering of a neutral massless test particle. We compute the deflection angle up to second order in Newton's constant, and by a comparison with field theory explicitly show which among the various massless fields of the superstring are excited by the string star matter. The perturbative series can now be resummed by finding the exact solution to the classical equations of motion of the corresponding low-energy action. We discuss the exact solutions in some detail.