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2000 QS7
Earth Impact Risk Summary
Torino Scale (maximum) 0
Palermo Scale (maximum) -3.46
Palermo Scale (cumulative) -3.27
Impact Probability (cumulative) 1.3e-06
Number of Potential Impacts 2
Vimpact 16.61 km/s
Vinfinity 12.32 km/s
H 19.6
Diameter 0.420 km
Mass 9.9e+10 kg
Energy 3.2e+03 MT
all above are mean values
weighted by impact probability
Analysis based on
56 observations spanning 119.21 days
(2000-Aug-24.13312 to 2000-Dec-21.34302)
Orbit diagram and elements available here.

These results were computed on Jul 19, 2002
 
2000 QS7
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)    
2053-08-25.30  0.70   0.00e+00   0.000   -1.80834   2.53e+05   4.4e-07   3.24e+03   -3.73   0 
2053-08-25.30  0.15   3.11e-03   0.000   -1.80573   1.88e+05   8.3e-07   3.24e+03   -3.46   0