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2004 XB45
Earth Impact Risk Summary
Torino Scale (maximum) 0
Palermo Scale (maximum) -8.03
Palermo Scale (cumulative) -8.03
Impact Probability (cumulative) 1.6e-08
Number of Potential Impacts 1
Vimpact 20.35 km/s
Vinfinity 17.02 km/s
H 26.3
Diameter 0.020 km
Mass 8.9e+06 kg
Energy 4.4e-01 MT
all above are mean values
weighted by impact probability
Analysis based on
47 observations spanning 3.5388 days
(2004-Dec-13.17846 to 2004-Dec-16.717258)
Orbit diagram and elements available here.

These results were computed on Dec 27, 2005
 
2004 XB45
Earth Impact Table
Date Distance Width Sigma
Impact		 Sigma
LOV		 Stretch
LOV		 Impact
Probability		 Impact
Energy		 Palermo
Scale		 Torino
Scale
YYYY-MM-DD.DD (rEarth) (rEarth)     (rEarth)   (MT)    
2035-12-18.08  0.21   0.00e+00   0.000   -2.84722   8.32e+05   1.6e-08   4.40e-01   -8.03   0