Solar System
Dynamics
Group 		2011 HB53
Older results

Asteroid 2011 HB53 was discovered on April 29, 2011 by the Pan-STARRS 1, Haleakala.

Number of original observations: 26
Arc : 2011 04 29 - 2011 05 04
Nominal rms: 0″.24 (52 residuals)

Possible collisions in: 2046, 2084





Year: 2046


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
 		 20110608

20461201		 3.246343480
-10.60
3.381624833		 0.770751412
-8.57
0.708779423		 31.2917731
-7.58
36.2112608		 79.1347731
7.29
76.0366681		 359.9438835
-7.36
2.1889337		 21.8292777
7.21
358.5260420		 0″.40

 

Impact date: 2046 12 08.626 (UT)   Vimpact= 25.823 km/sec   Ψimpact =16°.89  

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: 2084


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
 		 20110608

20841201		 3.255011849
-10.60
3.412593413		 0.771143942
-8.57
0.711500677		 31.3018072
-7.58
35.2346900		 79.0919996
7.29
76.3690710		 0.0371803
-7.36
2.9518112		 21.7417343
7.21
358.4454934		 0″.40

 

Impact date: 2084 12 08.686 (UT)   Vimpact= 25.412 km/sec   Ψimpact = 32°.31  




External links:

2011 HB53 page (NASA JPL) and Impact Risk page NEO Program (NASA JPL)
2011 HB53 page and Impact Risk page at the NEO Dynamic Site (NEODyS)




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