Solar System
Dynamics
Group 		2011 BT15

Asteroid 2011 BT15 was discovered on January 24, 2011 by the Pan-STARRS 1, Haleakala. This object has a diameter 130 - 300 meters.

Number of original observations: 70
Arc : 2011 01 24 - 2011 03 06
Nominal rms: 0″.33 (137 residuals)

Possible collisions in: 2037, 2056





Year: 2037


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
 		 20110320

20361228		 1.298030251
-9.08
1.274383704		 0.304408702
-9.07
0.295747608		 1.6620877
-8.99
1.8202053		 105.8194204
9.16
104.0445122		 308.4918695
-9.09
307.9716532		 66.0427591
9.06
23.5931788		 0″.43

 

Impact date: 2037 01 04.340 (UT)   Vimpact= 12.849 km/sec   Ψimpact =10°.34  

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: 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
 
dev/σ
 		 20110320

20551228		 1.297965745
-8.68
1.280797674		 0.304375264
-8.64
0.298162550		 1.6619921
-8.60
1.7446959		 105.8207855
8.63
103.9799612		 308.4895958
-8.72
308.6883370		 66.0490335
8.67
22.4723671		 0″.42

 

Impact date: 2056 01 05.217 (UT)   Vimpact= 12.858 km/sec   Ψimpact = 50°.16  




External links:

2011 BT15 page (NASA JPL) and Impact Risk page NEO Program (NASA JPL)
2011 BT15 page and Impact Risk page at the NEO Dynamic Site (NEODyS)




Solar System Dynamics & Planetology Group, 2011. All rights reserved