Solar System
Dynamics
Group
2011 UE305
older results

Asteroid 2011 UE305 was discovered on October 30, 2011 by Mt. Lemmon Survey. It has a diameter of about 150—330 meters.



Number of original observations: 20
Arc : 2011 10 30 - 2011 11 17
Nominal rms: 0″.33 (40 residuals)

Possible collisions in: 2107, 2109a, 2109b





Year: 2107


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
 
20111115

21070710
2.438996712
-4.67
2.442150219
0.677648652
-4.61
0.682343193
4.7825360
-4.63
4.2638737
304.4428399
-1.74
292.4367996
52.1794722
-4.63
65.5825409
12.7661956
4.59
347.2016015
0″.43

 

Impact date: 2107 07 17.191 (UT)   Vimpact= 20.064 km/sec   Ψimpact = 7°.91  

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: 2109a


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
 
20111115

21090710
2.414999732
-0.65
2.426598731
0.674144583
-0.66
0.669271123
4.7600680
-0.72
4.3820307
304.4347858
0.60
295.7620209
52.1574405
-0.83
61.7566428
12.9673461
0.65
346.6344733
0″.35

 

Impact date: 2109 07 20.171 (UT)   Vimpact= 19.365 km/sec   Ψimpact = 11°.15  

Year: 2109b


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
 
20111115

21090710
2.421902114
-1.81
2.421313923
0.675160357
-1.81
0.668789484
4.7665821
-1.85
4.3926263
304.4371311
-0.08
295.8235338
52.1638227
-1.93
61.8636595
12.9089438
1.79
346.5595154
0″.36

 

Impact date: 2109 07 20.236 (UT)   Vimpact= 19.370 km/sec   Ψimpact =10°.80  



External links:

2011 UE305 page (NASA JPL) and Impact Risk page NEO Program (NASA JPL)
2011 UE305 page and Impact Risk page at the NEO Dynamic Site (NEODyS)




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