Solar System
Dynamics
Group 		2008 UB7

Asteroid 2008 UB7 was discovered on October 26, 2008 at Lincoln Laboratory ETS, New Mexico. It made near Earth flyby on November 2 at a distance of 0.042 AU. This object has a diameter of about 50—110 meters.

Number of original observations: 66
Arc : 2008 10 26 - 2008 10 31
Nominal rms: 0″.40 (132 residuals)

Possible collisions in: 2056, 2070





Year: 2056


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

Epoch [TT] a [AU] e i [deg] Ω [deg] ω [deg] M [deg] rms
20081130
20561024		 1.234451510
1.233872949		 0.593053145
0.593144693		 2.0164852
1.9894388		 219.7001432
218.0346530		 287.5248270
289.2443403		 340.8910782
315.8295246		 0″.40
 

Impact date: 2056 10 31.635 (UT)   Vimpact= 21.952 km/sec   Ψimpact = 22°.87  

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.

Year: 2070


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

Epoch [TT] a [AU] e i [deg] Ω [deg] ω [deg] M [deg] rms
20081130
20701025		 1.233649420
1.244983855		 0.592543883
0.593017182		 2.0141778
2.0299712		 219.7029866
218.0846305		 287.5181656
288.5457977		 340.8534481
316.7080113		 0″.41
 

Impact date: 2070 11 01.322 (UT) (UT)   Vimpact= 21.992 km/sec   Ψimpact = 8°.57  




External links:

2008 UB7 page (NASA JPL) and Impact Risk page NEO Program (NASA JPL)
2008 UB7 page and Impact Risk page at the NEO Dynamic Site (NEODyS)




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