Hi All

In the Sun's birth nebula the odds of a stellar near miss were much higher, leading to the perturbing of the proto-Kuiper Belt, as described by Kenyon and Bromley's latest simulations and at Scott's webpage.

I think that would make for an interesting mix of planetoids out there.

Alternatively, following Woolfson, the Jovians all collapsed out of protostar filaments produced by the early Sun passing within ~ 1000 AU of a protostar with a disk. This would have a much higher probability and explain the Sun's slow rotation, the inclination between the Sun's rotational plane and the Ecliptic and a lot else that traditional cosmogony has trouble with.

Adam