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Blobrana · L

RE: Asteroid 2009 WW7

Blobrana · L

2009 WW7
Earth Impact Risk Summary

Torino Scale (maximum)	0
Palermo Scale (maximum)	-7.10
Palermo Scale (cumulative)	-6.84
Impact Probability (cumulative)	2.3e-05
Number of Potential Impacts	27

V_impact	13.83 km/s
V_infinity	8.19 km/s
H	28.9
Diameter	0.006 km
Mass	2.4e+05 kg
Energy	5.5e-03 MT
all above are mean values weighted by impact probability

Analysis based on
31 observations spanning 3.9974 days
(2009-Nov-19.23811 to 2009-Nov-23.23546)

Blobrana · L

2009 WW7
Earth Impact Risk Summary

Torino Scale (maximum)	0
Palermo Scale (maximum)	-7.09
Palermo Scale (cumulative)	-6.88
Impact Probability (cumulative)	1.8e-05
Number of Potential Impacts	26

V_impact	13.83 km/s
V_infinity	8.20 km/s
H	28.9
Diameter	0.006 km
Mass	2.5e+05 kg
Energy	5.8e-03 MT
all above are mean values weighted by impact probability

Analysis based on
25 observations spanning 1.1344 days
(2009-Nov-19.23811 to 2009-Nov-20.37248)

Blobrana · L

The 4.5 - 10 metre wide asteroid 2009 WW7 made a close pass (1.8 Lunar Distances, 0.0045 AU), travelling at 8.37 km/s, to the Earth-Moon system on the 17th November, 2009.

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The Lunar Distance (LD), the distance between Earth and the Moon, equals 384,401 km, (or 0.00256 AU).

Blobrana · L

Orbital elements:
2009 WW7                                                 Earth MOID = 0.0018 AU
Epoch 2010 Jan. 4.0 TT = JDT 2455200.5                  MPC
M  96.20990              (2000.0)            P               Q
n   0.86535498     Peri.  273.70581     +0.87284470     +0.48659168
a   1.0906193      Node    57.18085     -0.42842185     +0.80040254
e   0.2617442      Incl.    2.52494     -0.23365967     +0.35012044
P   1.14           H   28.9           G   0.15           U   7

MPEC 2009 - W51