2009 YG was a Torino Scale 1, now off the risk list 12/09

[Invalid]

Are there any other asteroids that could be Torino Scale 1 or anything close? Or are we safe for now?

 

[MeteorWayne]

From JPL/Sentry There is currently one Torino Scale 1 asteroid, it hasn't been spotted in a while (last observation Jan 11, 2008). It is 2007 VK184, an ~ 130 meteor sized object with 4 potential impacts between 2048 and 2057. The highest risk one on June 6, 2048 has a Palermo scale rating of -1.83. (1 in 3030 chance of impact). It is considered lost, the next supposed close approach when it might be recovered visually is in 2014 at 0.179 AU (pretty far).

NEODyS also lists 2000 SG344 as TS1, with a NEODys Palermo scale rating of -3.17 in 2070. JPL has a TS 0, PS -3.39 in 2071. Obviously, there's a lot of uncertanty in the orbit. There's a close approach (0.02 AU, or 10X LD) in 2028 that should help resolve the orbital details.

MW