[Dan(9698)]

"reseach in how to detect these killer asteroids. "

I am a pilot and have found that if you see other airplanes that appear to be moving, you will not collide.

If you see another airplane and it does not appear to be moving, you are on a collision course.

What I have concluded from that is, you will not detect the one that is going to hit. That is why this one got so close before they saw it. It had to appear to be moving and so would miss.

[VOR78]

Good point. Another thing to consider: even the bigger ones (up to a few miles wide) are very dim and difficult to detect at much of a distance. So it may have to get so close before we can detect it that its too late to do anything about it, not that we can right now anyway.

[Steve0113]

If you see another airplane and it does not appear to be moving, you are on a collision course.

Or you're following the other airplane.

[Paul Ross]

Any suggestions? Remote Observation platforms up at L-5 and Luna for additional parallax?