Solar System
Dynamics
Group
2009 XO
older results

Asteroid 2009 XO was discovered on December 9, 2009 by OAM, Observatory La Sagra. It has a diameter of about 230—530 meters.

Number of original observations: 221
Arc : 2009 12 09 - 2010 01 16
Nominal rms: 0″.37 (442 residuals)

Possible collisions in: 2038, 2083





Year: 2038


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
 
20100104

20380110
1.854450029
4.94
1.871299549
0.543013802
4.95
0.545418266
0.3573118
5.10
0.0980597
27.6619704
6.69
293.4842852
140.6426862
-6.69
235.4875141
342.6298561
4.95
342.9156426
0″.39

 

Impact date: 2038 01 17.577 (UT)   Vimpact= 16.434 km/sec   Ψimpact = 36°.24  

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.

Year: 2083


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
 
20100104

20830109
1.855079769
0.30
1.838687947
0.543179455
0.30
0.539463346
0.3574027
0.54
0.0866702
27.6706857
1.24
290.4094779
140.6338623
-1.20
237.7552196
342.6401059
0.29
342.2950214
0″.45

 

Impact date: 2083 01 16.347 (UT)   Vimpact= 16.463 km/sec   Ψimpact =37°.66  





Older result based on shorter arc



Number of original observations: 137
Arc : 2009 12 09 - 2010 01 04
Nominal rms: 0″.32 (269 residuals)

Possible collisions in: 2038





Year: 2038


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
 
20100104

20380110
1.854450083
3.66
1.871299502
0.543014351
3.67
0.545418793
0.3573109
3.64
0.0980672
27.6645741
3.47
293.4501220
140.6402307
-3.44
235.5218229
342.6298328
3.66
342.9156331
0″.33

 

Impact date: 2038 01 17.577 (UT)   Vimpact= 16.431 km/sec   Ψimpact = 37°.48  

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




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