Solar System
Dynamics
Group 		2012 QD8

Asteroid 2012 QD8 missed Earth by 17 lunar distanced (0.00437 au) on 9th September 2012. This object has a diameter 63 - 140 meters.

Number of original observations: 42
Arc : 2012 08 17 - 2012 09 06
Nominal rms: 0″.22 (84 residuals)

Possible collision in: 2047





Year: 2047


Orbital elements of impact orbit for two dates (equ. J2000)
Epoch [TT] a [AU] e i [deg] Ω [deg] ω [deg] M [deg] rms
 
dev/σ
 		 20120930

20470301		 1.912842040
0.22
1.902182606		 0.698503933
0.22
0.697160897		 5.5828436
0.24
5.6045094		 349.5039194
-0.31
347.6343398		 86.8859248
0.17
88.7815824		 349.9079395
0.22
14.6287767		 0″.39

 

Impact date: 2047 03 08.969 (UT)   Vimpact= 23.412 km/sec   Ψimpact = 15°.53  

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:

2012 QD8 page (NASA JPL) and Impact Risk page NEO Program (NASA JPL)
2012 QD8 page and Impact Risk page at the NEO Dynamic Site (NEODyS)




Solar System Dynamics & Planetology Group, 2012. All rights reserved