In our solar system, the inter-planetary region has chunks of matter (much smaller in size compared to planets) called asteroids. They
1
will not move around the sun since they have very small masses compared to sun.
2
will move in an irregular way because of their small masses and will drift away into outer space.
3
will move around the sun in closed orbits but not obey Kepler’s laws.
4
will move in orbits like planets and obey Kepler’s laws.