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Post Info TOPIC: Asteroid 2009 HA21
Blobrana


L

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RE: Asteroid 2009 HA21
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2009 HA21
Earth Impact Risk Summary
Torino Scale (maximum) 0
Palermo Scale (maximum) -7.10
Palermo Scale (cumulative) -7.10
Impact Probability (cumulative) 1.4e-10
Number of Potential Impacts 1
Vimpact 32.92 km/s
Vinfinity 30.98 km/s
H 20.1
Diameter 0.330 km
Mass 4.9e+10 kg
Energy 6.3e+03 MT
all above are mean values
weighted by impact probability
Analysis based on
16 observations spanning .95553 days
(2009-Apr-20.24948 to 2009-Apr-21.20501)

Source

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Blobrana


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Orbital elements:
2009 HA21                                           PHA, Earth MOID = 0.0468 AU
Epoch 2009 June 18.0 TT = JDT 2455000.5                 MPC
M 104.80680              (2000.0)            P               Q
n   0.61307035     Peri.  218.82086     +0.43685324     -0.89841334
a   1.3723425      Node   205.36987     +0.84921514     +0.42835026
e   0.6948727      Incl.    6.01035     +0.29663597     +0.09679627
P   1.61           H   20.5           G   0.15           U   9

MPEC 2009 - H26

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