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Post Info TOPIC: Asteroid 2009 UN3
Blobrana


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RE: Asteroid 2009 UN3
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Asteroid 2009 UN3 has passed the Earth.

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Blobrana


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Update:
The 770 - 1700 metre wide asteroid 2009 UN3 will make a close pass (14.3 Lunar Distances, 0.0367 AU), travelling at 22.66 km/s, to the Earth-Moon system on the 9th February, 2010.

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The Lunar Distance (LD), the distance between Earth and the Moon, equals 384,401 km, (or 0.00256 AU).

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Blobrana


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Removed from Earth Impact Risk List.

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Blobrana


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The 770 - 1700 metre wide asteroid 2009 UN3 will make a close pass (14.4 Lunar Distances, 0.0369 AU), travelling at 22.72 km/s, to the Earth-Moon system on the 9th February, 2010.

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The Lunar Distance (LD), the distance between Earth and the Moon, equals 384,401 km, (or 0.00256 AU).

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Blobrana


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2009 UN3
Earth Impact Risk Summary
Torino Scale (maximum) 0
Palermo Scale (maximum) -4.30
Palermo Scale (cumulative) -3.53
Impact Probability (cumulative) 3.5e-08
Number of Potential Impacts 54
Vimpact 24.96 km/s
Vinfinity 22.33 km/s
H 17.8
Diameter 0.924 km
Mass 1.1e+12 kg
Energy 8.1e+04 MT
all above are mean values
weighted by impact probability
Analysis based on
17 observations spanning 5.1178 days
(2009-Oct-19.59856 to 2009-Oct-24.71635)



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Blobrana


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2009 UN3
Earth Impact Risk Summary
Torino Scale (maximum) 0
Palermo Scale (maximum) -4.41
Palermo Scale (cumulative) -4.19
Impact Probability (cumulative) 4.8e-09
Number of Potential Impacts 23
Vimpact 25.44 km/s
Vinfinity 22.87 km/s
H 17.7
Diameter 0.965 km
Mass 1.2e+12 kg
Energy 9.5e+04 MT
all above are mean values
weighted by impact probability
Analysis based on
11 observations spanning 1.1593 days
(2009-Oct-19.59856 to 2009-Oct-20.75788)



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Blobrana


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Orbital elements:
2009 UN3                                                 Earth MOID = 0.1807 AU
Epoch 2010 Jan. 4.0 TT = JDT 2455200.5                  MPC
M 353.83213              (2000.0)            P               Q
n   0.29159816     Peri.  325.57442     -0.48485175     -0.81120979
a   2.2522306      Node   149.15315     +0.87448909     -0.44380338
e   0.5080242      Incl.   39.60792     -0.01369703     +0.38075878
P   3.38           H   17.6           G   0.15           U   9

MPEC 2009 - U52

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