  Utilizing a recently found class of exact, analytic rotating solutions of
non-relativistic fireball hydrodynamics, we calculate analytically the
single-particle spectra, the elliptic flows and two-particle Bose-Einstein
correlation functions for rotating and expanding fireballs with spheroidal
symmetry. We demonstrate, that rotation generates final state momentum
anisotropies even for a spatially symmetric, spherical initial geometry of the
fireball. The mass dependence of the effective temperatures, as well as the HBT
radius parameters and the elliptic flow are shown to be sensitive not only to
radial flow effects but also to the magnitude of the initial angular momentum.
