Solar System
Dynamics
Group 		2009 TH8

Asteroid 2009 TH8 was discovered on November 14, 2009 by the Siding Spring Survey. It has a diameter in the range 30—70 meters.

Number of original observations: 44
Arc : 2009 10 14 - 2009 10 18
Nominal rms: 0″.68 (86 residuals)

Possible collisions in: 2068





Year: 2068


Orbital elements of impact orbit for two dates (equ. J2000)

Epoch [TT] a [AU] e i [deg] Ω [deg] ω [deg] M [deg] rms
20100104
20681015		 2.053124284
2.079397639		 0.594471170
0.590010030		 4.9389072
4.8615905		 31.1046988
28.8743119		 49.7278950
52.1289224		 12.9029686
345.4836870		 0″.68
 

Impact date: 2068 10 22.371 (UT)   Vimpact= 16.958 km/sec   Ψimpact = 52°.01  

dev/σ
Deviation from the nominal orbit parameter divided by the respective uncertainty.
Vimpact
The velocity of the asteroid relative to the Earth at the moment of impact.
Ψimpact
The impact angle is measured from the vertical axis that goes through the impact point. Thus, the impact angle is 0 degrees for a vertical impact.
rms
Root mean square for the derived impact orbit.



External links:

2009 TH8 page (NASA JPL) and Impact Risk page NEO Program (NASA JPL)
2009 TH8 page and Impact Risk page at the NEO Dynamic Site (NEODyS)





Solar System Dynamics & Planetology Group, 2008. All rights reserved