Solar System
Dynamics
Group 		2010 HP20

Asteroid 2010 HP20 was discovered on April 20, 2010 by the Mt Lemmon Survey. This object has a diameter of about 20 meters.

Number of original observations: 12
Arc : 2010 04 20.448 - 2010 04 20.496
Nominal rms: 0″.33 (24 residuals)

Possible collisions in: 2040





Year: 2040


Orbital elements of impact orbit for two dates (equ. J2000)

Epoch [TT] a [AU] e i [deg] Ω [deg] ω [deg] M [deg] rms
20100504
20400411		 1.951264479
1.952424926		 0.523991788
0.523656667		 7.5677692
7.6241016		 209.0862102
208.5514124		 320.9722432
321.7532976		 16.2914479
8.0055707		 0″.43
 

Impact date: 2040 04 18.542 (UT)   Vimpact= 15.720 km/sec   Ψimpact = 21°.76  

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:

2010 HP20 page (NASA JPL) and Impact Risk page NEO Program (NASA JPL)
2010 HP20 page and Impact Risk page at the NEO Dynamic Site (NEODyS)




Solar System Dynamics & Planetology Group, 2010. All rights reserved