#5% of lightspeed is insanely fast for an asteroid.

Earth is gone. It doesn't matter where that giant asteroid hits.

Luna is gone.

Some of the combined mass might form a new belt, but much will be "shotgunned" throughout the solar system. Stations close to Earth or the Moon will almost certainly be hit by fragments.

5% of lightspeed is insanely fast for an asteroid.

Earth is gone. It doesn't matter where that giant asteroid hits.

Luna is gone.

Some of the combined mass might form a new belt, but much will be "shotgunned" throughout the solar system. Stations close to Earth or the Moon will almost certainly be hit by fragments.