Solar System
Dynamics
Group 		2009 WM1

Asteroid 2009 WM1 was discovered on November 17, 2009 by Catalina Sky Survey. It has a diameter of about 250—560 meters.

Older results based on shorter arcs

Number of original observations: 89
Arc : 2009 11 17 - 2010 05 13
Nominal rms: 0″.34 (178 residuals)

Possible collisions in: 2091





Year: 2091


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
 		 20091125

20911116		 1.180597013
7.67
1.246498935		 0.169004530
7.66
0.213005530		 25.7638974
6.50
25.2817665		 240.3032354
6.29
239.9882748		 162.5782147
6.94
164.0978379		 21.4444008
-7.54
4.9301552		 0″.40

 

Impact date: 2091 11 23.346 (UT)   Vimpact= 18.219 km/sec   Ψimpact = 35°.38  

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 WM1 page (NASA JPL) and Impact Risk page NEO Program (NASA JPL)
2009 WM1 page and Impact Risk page at the NEO Dynamic Site (NEODyS)




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