This first combines several orbit traces image I got from "Planets", a really old DOS program. This won't be appearing in the game as such.
The second is what I ended up with when I took the first image and created ellipses over the orbits with Corel Draw, then added in the Trojans. These are positions for January 2115, incidentally.
And the third is the sizes of the asteroids and some Postscript cratering
Anything look horribly wrong?
later Might replace the moon picture with one of the 500mm lens shots I took last year.