Vibrational population factors for the nascent Penning ions D-2(+)(upsilon’)(... He) and energy of the Penning electrons are calculated for the ionization event He(2(3)S)-D-2(upsilon "=0) --> [He D-2(+)(upsilon’)] + e(-) taking place at a range of the He*-D-2 separations and orientations accessible by the system during low-energy collisions. The vibrational populations are obtained from the local widths of the He(2(3)S)-D-2(upsilon "=0) state with respect to autoionization to D-2(+)(... He) in its vth vibrational level. The resulting initial overall picture of the autoionization event is consistent with the very accurate Penning electron spectra of the He(2(3)S)-H-2(upsilon "=0) system. On the other hand, the population factors are different from the approximate average populations used in model considerations about the Penning processes in the system. Sample dynamical calculations on the system are presented, yielding a similar picture of the autoionizing event. The calculated static quantities vary quite smoothly with changes in the He*-D-2 separations and orientations, thus indicating that the analytical representations of the present 2D surfaces might form a sound basis for future detailed study of the dynamics of the collision system.