And in response to ASTA, I say this:

One: This isn't armor. This is an energy screen, and THEN armor. The energy screen would take most of the nuclear detonation. 
Two: Point defense, including the railguns that are also meant to be shooting at any shuttles or fighters or something will also fire on a nuclear missile or shell.
Three: Pulse lasers are also on the New Point, and would also hit a nuclear missile or projectile.
Four: Correct your missile's or your projectile's course in-transit won't do anything. The targeting system will take note and will compensate. 
Five: A bunker so deep that a bunker buster won't break it would mean that you wouldn't be able to fire from it, either. It'd be a safe place, not a fire-a-missile place.

A fighter wouldn't be able to get close, and a missile wouldn't either. And if a nuclear weapon were to hit the energy screen, the station might take medium damage, but would not be destroyed. Then, you'd piss of the Ceres Independence, and they'll go looking for uranium-rich sources, or, even better, they'll start an antimatter program. A ten-megaton nuclear weapon wouldn't be able to compare to the same with antimatter.