Ab initio self-consistent field (SCF) Hartree-Fock (HF) calculations employing basis sets of double-zeta plus polarization (dzP) quality are reported for C70. The D5h rugby-ball shaped equilibrium geometry, obtained via analytic energy derivatives, is reminiscent Of C60 except for a ring of ten carbon atoms that give rise to a central band of five hexagons composed of aromatic C-C bonds. The calculated ionization potential of C70 (7.6 eV) is in excellent agreement with recent experimental measurements.