Caption: The inner Solar System plus Jupiter which is in the outer Solar System.
Features:
If you were on an asteroid doing naked-eye astronomy, most of the other asteroids would be unseen, except a few near ones might be star-like points of light, unless there was a fortuitous unusually close encounter with another asteroid (HI-257).
Eastward/westward is counterclockwise/clockwise from this perspective.
A very few asteroids orbit westward which is called retrograde motion.
It is the natural unit for Solar System distances---no one grasps such distances in kilometers or miles---but the media keep quoting them mindlessly anyway.
Most asteroid belt asteroids orbit in the main belt with mean orbital radii in the range 2.06--3.27 AU (see Wikipedia: Asteroid belt: Orbits).
Gravitational perturbations by Jupiter prevented the planetesimals in the asteroid belt from coalescing into a planet in the early days of the Solar System (see Wikipedia: Asteroid belt: Formation). The asteroids evolved from those planetesimals.
Jupiter still prevents the asteroid belt asteroids from coalescing, but also somehow mostly stabilizes their orbits so that the asteroid belt has survived from the early days of the Solar System.
These are asteroids that cluster about the stable Lagrangian points the L4 and L5 points which are on Jupiter's orbit at points 60° ahead and 60° behind Jupiter.
The combined effect of the Sun's gravity, Jupiter' gravity, and the centrifugal force is to create the L4 and L5 points. They are stable equilibrium points in the frame rotating with the Sun and Jupiter about the mutual barycenter (i.e., center of mass) of the Sun and Jupiter .
Because the L4 and L5 points are stable, over the course of Solar System evolution wandering asteroids have accumulated near the L4 and L5 points---these are the Jupiter Trojan asteroids.
Gravitational perturbations prevent the captured asteroids from collapsing into large objects at the exact L4 and L5 points, but the restoring force that makes the L4 and L5 points stable prevents the asteroids from escaping. In particular, the restoring force prevents the Jupiter Trojan asteroids from slowly wandering along the Jupiter's orbit and colliding with or being ejected by Jupiter.
See N-body simulation videos for impact events and gravity assists.