Solar System
Dynamics
Group 		(153814) 2001 WN5
older result

Asteroid (153814) 2001 WN5 was discovered on November 20, 2001 by LONEOS asteroid survey at Lowell Observatory.
It has a diameter of about 0.7— 1.5 kilometers.

Number of original observations: 162
Arc : 1996 02 10 - 2010 04 19
Nominal rms: 0″.38 (weighted observations) (320 residuals)

Possible collisions in: 2133





Year: 2133


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
 		 20100504

21330621		 1.711069532
-9.75
1.686581861		 0.466964026
7.65
0.461180888		 1.9217578
-0.24
2.3843734		 277.7172142
-1.49
274.5186473		 44.3045797
0.90
48.8215733		 306.9568873
8.68
339.5898134		 0″.43

 

Impact date: 2133 06 28.338(UT)   Vimpact= 15.341 km/sec   Ψimpact = 26°.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.

Older results

Number of original observations: 125
Arc : 1996 02 10 - 2010 02 18
Nominal rms: 0″.77 (244 residuals)

Possible collisions in: 2133





Year: 2133


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
 		 20100213

21330621		 1.711145505
-1.67
1.686581960		 0.466962240
-2.54
0.461181465		 1.9217295
-0.07
2.3844912		 277.7221812
-0.68
274.5180492		 44.2944205
0.56
48.8220375		 271.7358941
2.12
339.5898491		 0″.78

 

Impact date: 2133 06 28.338(UT)   Vimpact= 15.357 km/sec   Ψimpact = 25°.98  

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:

2001 WN5 page (NASA JPL) and Impact Risk page NEO Program (NASA JPL)
2001 WN5 page and Impact Risk page at the NEO Dynamic Site (NEODyS)





Solar System Dynamics & Planetology Group, 2009. All rights reserved