* Astronomy

Blobrana · L

RE: Asteroid 2009 WY7

Blobrana · L

Asteroid 2009 WY7 has passed the Earth.

Blobrana · L

2009 WY7
Earth Impact Risk Summary

Torino Scale (maximum)	0
Palermo Scale (maximum)	-7.30
Palermo Scale (cumulative)	-6.48
Impact Probability (cumulative)	8.1e-08
Number of Potential Impacts	43

V_impact	16.82 km/s
V_infinity	12.60 km/s
H	23.8
Diameter	0.060 km
Mass	2.9e+08 kg
Energy	9.9e+00 MT
all above are mean values weighted by impact probability

Analysis based on
8 observations spanning 1.1107 days
(2009-Nov-19.30256 to 2009-Nov-20.41322)

Blobrana · L

The 50 - 110 metre wide asteroid 2009 WY7 will make a close pass (21.6 Lunar Distances, 0.0556 AU), travelling at 12.08 km/s, to the Earth-Moon system on the 22nd 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 WY7                                                 Earth MOID = 0.0098 AU
Epoch 2010 Jan. 4.0 TT = JDT 2455200.5                  MPC
M 270.85275              (2000.0)            P               Q
n   1.88350875     Peri.  172.24895     -0.55298571     +0.83080353
a   0.6493681      Node    64.15847     -0.76814534     -0.47905366
e   0.6094399      Incl.    4.01565     -0.32273757     -0.28332505
P   0.52           H   23.6           G   0.15           U   9

MPEC 2009 - W53