It's not obvious that such a system would be useful for that at all. The effects on the trajectory would be hard to predict. It would be useful at all because any meaningful change in trajectory hundreds of millions of miles away from impact results in a miss.
Also such systems and missions are the results of thousands of people working together not the pres pulling up a web interface and clippy asking "So it looks like you'd like to deflect an asteroid today!" Much like jump starting the apocalypse with global nuclear war can't be effected by pressing a red button somewhere.
Also such systems and missions are the results of thousands of people working together not the pres pulling up a web interface and clippy asking "So it looks like you'd like to deflect an asteroid today!" Much like jump starting the apocalypse with global nuclear war can't be effected by pressing a red button somewhere.