  We investigate the distribution of encounter velocities and impact angles
describing collisions in the habitable zone of the early planetary system. Here
we present a catalogue of collision characteristics for a particular mass ratio
of the colliding bodies and seven different planetesimal masses ranging from a
tenth of Ceres' mass to 10 times the mass of the Moon. We show that there are
virtually no collisions with impact speeds lower than the surface escape
velocity and a similar velocity-impact angle distribution for different
planetesimal masses if velocities are normalized using the escape velocity. An
additional perturbing Jupiter-like object distorts the collision velocity and
impact picture in the sense that grazing impacts at higher velocities are
promoted if the perturber's orbit is close to the habitable zone whereas a more
distant perturber has more the effect of a mere widening of the velocity
dispersion.
