Assuming 50 bagillion kph is still below light speed:
Your 10 ton object is going to obliterate the planet.
As a massive object travelling at relativistic speed the extent of time dilation might be so great as to allow an observer on the meteorite to experience a lifetime or more in the interval between entering the Earth's atmosphere and impact.
As a massive object travelling at relativistic speed the extent of time dilation might be so great as to allow an observer on the meteorite to experience a lifetime or more in the interval between entering the Earth's atmosphere and impact.