Re: NASA Reporting Risk Assessment
There are now two asteroids with a positive value on the Torino Impact Hazard Scale, as listed here... It should be noted that there are many other asteroids with a higher probability of impact, but they are all less than 50 meters in diameter, and IMO would probably break up before hitting the ground. The two asteroids currently rated "one" on the Torino Scale are hundreds of meters in diameter (continent killers). A positive viewpoint is that larger asteroids have more reliable orbits and can be computed more reliably.