How well would modern society handle the dinosaur killing meteor if it happened today?

[Darren_Garrison]

@Machine_Elf

On breaking up an asteroid, there was this discussion back in 2010

Other threads touching on it include:

Redirecting asteroids on an impact course by momentum transfer

Stranger on a Train, who has claimed many times to be a rocket scientist and made many educated seeming posts, made the following statement : *Redirecting a much larger object, however, becomes a substantial challenge not only because of the additional mass but because the impulse will impinge upon only by a fraction of aspect of the body and would likely be absorbed as deformation within the body (inelastic transfer or liquification) rather than uniformly delivered to the entire aspect. Moving…

The K-T Asteroid: Would Modern Instrumentation Have Seen It Coming?

Would the equipment we use now to watch for ELE asteroids have picked up the K-T asteroid? If humans had been on the ground at the time, when would they have been able to see it with their own eyes? Hours before impact? Minutes? Seconds?