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Post Info TOPIC: Asteroid 2009 SG18
Blobrana


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RE: Asteroid 2009 SG18
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2009 SG18
Earth Impact Risk Summary
Torino Scale (maximum) 0
Palermo Scale (maximum) -4.47
Palermo Scale (cumulative) -4.04
Impact Probability (cumulative) 6.3e-09
Number of Potential Impacts 6
Vimpact 35.64 km/s
Vinfinity 33.85 km/s
H 17.8
Diameter 0.930 km
Mass 1.1e+12 kg
Energy 1.6e+05 MT
all above are mean values
weighted by impact probability
Analysis based on
39 observations spanning 7.9670 days
(2009-Sep-21.17145 to 2009-Sep-29.13845)



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Blobrana


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Posts: 131433
Date:
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2009 SG18
Earth Impact Risk Summary
Torino Scale (maximum) 0
Palermo Scale (maximum) -2.26
Palermo Scale (cumulative) -1.99
Impact Probability (cumulative) 4.6e-07
Number of Potential Impacts 33
Vimpact 34.44 km/s
Vinfinity 32.59 km/s
H 17.9
Diameter 0.895 km
Mass 9.7e+11 kg
Energy 1.4e+05 MT
all above are mean values
weighted by impact probability
Analysis based on
27 observations spanning 3.9574 days
(2009-Sep-21.17145 to 2009-Sep-25.12887)



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Blobrana


L

Posts: 131433
Date:
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2009 SG18
Earth Impact Risk Summary
Torino Scale (maximum) 0
Palermo Scale (maximum) -2.40
Palermo Scale (cumulative) -2.06
Impact Probability (cumulative) 3.8e-07
Number of Potential Impacts 34
Vimpact 34.38 km/s
Vinfinity 32.53 km/s
H 17.9
Diameter 0.904 km
Mass 1.0e+12 kg
Energy 1.4e+05 MT
all above are mean values
weighted by impact probability
Analysis based on
25 observations spanning 3.6952 days
(2009-Sep-21.17145 to 2009-Sep-24.86668)



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Blobrana


L

Posts: 131433
Date:
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2009 SG18
Earth Impact Risk Summary
Torino Scale (maximum) 0
Palermo Scale (maximum) -3.25
Palermo Scale (cumulative) -2.31
Impact Probability (cumulative) 1.8e-07
Number of Potential Impacts 115
Vimpact 34.49 km/s
Vinfinity 32.64 km/s
H 17.7
Diameter 0.960 km
Mass 1.2e+12 kg
Energy 1.7e+05 MT
all above are mean values
weighted by impact probability
Analysis based on
19 observations spanning 1.7130 days
(2009-Sep-21.17145 to 2009-Sep-22.88443)



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Blobrana


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Posts: 131433
Date:
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Orbital elements:
2009 SG18                                           PHA, Earth MOID = 0.0123 AU
Epoch 2009 June 18.0 TT = JDT 2455000.5                 MPC
M 320.88920              (2000.0)            P               Q
n   0.24512939     Peri.  206.99051     +0.89640912     -0.44280856
a   2.5285553      Node   178.69165     +0.35702396     +0.74714466
e   0.6143821      Incl.   57.55281     -0.26264917     -0.49567675
P   4.02           H   17.7           G   0.15           U   9

MPEC 2009 - S68

2009 SG18
Earth Impact Risk Summary
Torino Scale (maximum) 0
Palermo Scale (maximum) -3.23
Palermo Scale (cumulative) -2.61
Impact Probability (cumulative) 6.3e-08
Number of Potential Impacts 129
Vimpact 34.21 km/s
Vinfinity 32.34 km/s
H 17.7
Diameter 0.955 km
Mass 1.2e+12 kg
Energy 1.7e+05 MT
all above are mean values
weighted by impact probability
Analysis based on
16 observations spanning .98709 days
(2009-Sep-21.17145 to 2009-Sep-22.15854)



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