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Post Info TOPIC: Asteroid 2009 SP171
Blobrana


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Posts: 131433
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RE: Asteroid 2009 SP171
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Orbital elements:
2009 SP171                                               Earth MOID = 0.0612 AU
Epoch 2010 July 23.0 TT = JDT 2455400.5                 MPC
M  72.75441              (2000.0)            P               Q
n   0.62448059     Peri.  285.16405     -0.78617453     -0.54265249
a   1.3555746      Node   223.16320     +0.58423732     -0.80861212
e   0.3561363      Incl.   25.61413     -0.20148539     -0.22732075
P   1.58           H   19.1           G   0.15           U   5

MPEC 2010 - L14

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Blobrana


L

Posts: 131433
Date:
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Orbital elements:
2009 SP171                                          PHA, Earth MOID = 0.0292 AU
Epoch 2009 June 18.0 TT = JDT 2455000.5                 MPC
M 161.86402              (2000.0)            P               Q
n   0.65717494     Peri.  291.59692     -0.86792225     -0.40145891
a   1.3102336      Node   226.15299     +0.44661849     -0.88844165
e   0.3278033      Incl.   23.92522     -0.21735431     -0.22249086
P   1.50           H   19.1           G   0.15           U   9

MPEC 2009 - S129

2009 SP171
Earth Impact Risk Summary
Torino Scale (maximum) 0
Palermo Scale (maximum) -3.85
Palermo Scale (cumulative) -3.54
Impact Probability (cumulative) 2.0e-07
Number of Potential Impacts 79
Vimpact 18.32 km/s
Vinfinity 14.54 km/s
H 19.1
Diameter 0.512 km
Mass 1.8e+11 kg
Energy 7.4e+03 MT
all above are mean values
weighted by impact probability
Analysis based on
21 observations spanning 1.0904 days
(2009-Sep-28.20541 to 2009-Sep-29.29576)



-- Edited by Blobrana on Tuesday 29th of September 2009 03:58:41 PM

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