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Post Info TOPIC: Asteroid 2009 WD7
Blobrana


L

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RE: Asteroid 2009 WD7
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2009 WD7
Earth Impact Risk Summary
Torino Scale (maximum) 0
Palermo Scale (maximum) -8.49
Palermo Scale (cumulative) -8.09
Impact Probability (cumulative) 1.7e-08
Number of Potential Impacts 22
Vimpact 14.74 km/s
Vinfinity 9.64 km/s
H 25.9
Diameter 0.023 km
Mass 1.6e+07 kg
Energy 4.1e-01 MT
all above are mean values
weighted by impact probability
Analysis based on
15 observations spanning .56236 days
(2009-Nov-19.37112 to 2009-Nov-19.93348)



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Blobrana


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Posts: 131433
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Orbital elements:
2009 WD7                                                 Earth MOID = 0.0177 AU
Epoch 2010 Jan. 4.0 TT = JDT 2455200.5                  MPC
M  20.29221              (2000.0)            P               Q
n   0.26568067     Peri.  108.66405     +0.93750884     -0.34736936
a   2.3964190      Node   271.66647     +0.31111050     +0.86291234
e   0.5872141      Incl.    1.16314     +0.15584428     +0.36703791
P   3.71           H   25.6           G   0.15           U   8

MPEC 2009 - W44

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