Question

If a planet were discovered between mars and earth, what would its characteristics possibly be?

Characteristics such as: rotation rate, revolution rate, number of moons, number of rings, etc.

Answer 1

Rocky like the Earth and Mars and not at all gaseous.

Explanation:

I come to this conclusion in view of the asteroids orbiting between Mars and Jupiter. They are space-rock-orbiters.

Perhaps, the orbit of the largest rock-orbiter-asteroid Ceres gives a least upper bound, for the orbits of rocky orbiters.