I predict that the effect will be negligible. If we look at the Conservation of Momentum law, the asteroid's momentum will be several orders of magnitude greate

I predict that the effect will be negligible. If we look at the Conservation of Momentum law, the asteroid's momentum will be several orders of magnitude greater than the spacecraft's momentum. In earthly terms, that would be like a fly crashing into a charging rhino. It wouldn't save you from being trampled.