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Post Info TOPIC: Asteroid 2009 WN25


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RE: Asteroid 2009 WN25
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Removed from Earth Impact Risk List.

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2009 WN25
Earth Impact Risk Summary
Torino Scale (maximum) 0
Palermo Scale (maximum) -5.03
Palermo Scale (cumulative) -5.03
Impact Probability (cumulative) 6.6e-10
Number of Potential Impacts 1
Vimpact 42.42 km/s
Vinfinity 40.93 km/s
H 18.2
Diameter 0.760 km
Mass 6.1e+11 kg
Energy 1.3e+05 MT
all above are mean values
weighted by impact probability
Analysis based on
54 observations spanning 1.4001 days
(2009-Nov-22.1489 to 2009-Nov-23.54898)



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The 670 - 1500 metre wide asteroid 2009 WN25 made a close pass (0.1747 AU), to the Earth-Moon system on the 19th November, 2009.

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Orbital elements:
2009 WN25 Earth MOID = 0.1138 AU
Epoch 2010 Jan. 4.0 TT = JDT 2455200.5 MPC
M 5.81219 (2000.0) P Q
n 0.14377385 Peri. 181.91301 +0.60601393 -0.26703888
a 3.6086889 Node 232.07783 +0.74184754 +0.52967747
e 0.6945129 Incl. 71.77891 +0.28707027 -0.80506647
P 6.86 H 18.1 G 0.15 U 9

MPEC 2009 - W64


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