* Astronomy

Blobrana · L

RE: Asteroid 2009 WR52

Blobrana · L

2009 WR52
Earth Impact Risk Summary

Torino Scale (maximum)	0
Palermo Scale (maximum)	-5.94
Palermo Scale (cumulative)	-5.76
Impact Probability (cumulative)	1.1e-04
Number of Potential Impacts	62

V_impact	12.39 km/s
V_infinity	5.42 km/s
H	28.3
Diameter	0.007 km
Mass	5.5e+05 kg
Energy	1.0e-02 MT
all above are mean values weighted by impact probability

Analysis based on
23 observations spanning 3.9327 days
(2009-Nov-23.21917 to 2009-Nov-27.15186)

Blobrana · L

2009 WR52
Earth Impact Risk Summary

Torino Scale (maximum)	0
Palermo Scale (maximum)	-5.98
Palermo Scale (cumulative)	-5.80
Impact Probability (cumulative)	1.0e-04
Number of Potential Impacts	83

V_impact	12.39 km/s
V_infinity	5.42 km/s
H	28.3
Diameter	0.007 km
Mass	5.5e+05 kg
Energy	1.0e-02 MT
all above are mean values weighted by impact probability

Analysis based on
20 observations spanning 2.9127 days
(2009-Nov-23.21917 to 2009-Nov-26.13188)

Blobrana · L

Orbital elements:
2009 WR52                                                Earth MOID = 0.0091 AU
Epoch 2010 Jan. 4.0 TT = JDT 2455200.5                  MPC
M 105.99851              (2000.0)            P               Q
n   0.91417473     Peri.  266.46722     +0.83988576     +0.53711528
a   1.0514370      Node    61.03068     -0.45578011     +0.77607576
e   0.2223308      Incl.    5.12136     -0.29471408     +0.33047480
P   1.08           H   28.0           G   0.15           U   9

MPEC 2009 - W84

2009 WR52
Earth Impact Risk Summary

Torino Scale (maximum)	0
Palermo Scale (maximum)	-7.31
Palermo Scale (cumulative)	-6.68
Impact Probability (cumulative)	1.2e-05
Number of Potential Impacts	309

V_impact	12.02 km/s
V_infinity	4.38 km/s
H	28.7
Diameter	0.006 km
Mass	3.4e+05 kg
Energy	6.0e-03 MT
all above are mean values weighted by impact probability

Analysis based on
11 observations spanning .18015 days
(2009-Nov-23.21917 to 2009-Nov-23.39932)