* Astronomy

Blobrana · L

RE: Asteroid 2009 WQ52

Blobrana · L

Asteroid 2009 WQ52 has passed the Earth.

Blobrana · L

2009 WQ52
Earth Impact Risk Summary

Torino Scale (maximum)	0
Palermo Scale (maximum)	-7.61
Palermo Scale (cumulative)	-7.61
Impact Probability (cumulative)	3.7e-07
Number of Potential Impacts	1

V_impact	18.49 km/s
V_infinity	14.76 km/s
H	28.2
Diameter	0.008 km
Mass	6.5e+05 kg
Energy	2.6e-02 MT
all above are mean values weighted by impact probability

Analysis based on
21 observations spanning 2.6368 days
(2009-Nov-23.19879 to 2009-Nov-25.835553)

Blobrana · L

Orbital elements:
2009 WQ52                                                Earth MOID = 0.0075 AU
Epoch 2010 Jan. 4.0 TT = JDT 2455200.5                  MPC
M   1.45157              (2000.0)            P               Q
n   0.23975839     Peri.   49.30311     -0.34812579     -0.93335435
a   2.5661784      Node    61.27258     +0.82718972     -0.34976329
e   0.6599724      Incl.    5.72728     +0.44109591     -0.08071742
P   4.11           H   28.1           G   0.15           U   6

MPEC 2009 - W83

The 6 - 14 metre wide asteroid 2009 WQ52 will make a close pass (3.3 lunar distances, 0.0084 AU), travelling at 13.27 km/second, with the Earth-Moon system on the 27th December, 2009.

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

2009 WQ52
Earth Impact Risk Summary

Torino Scale (maximum)	0
Palermo Scale (maximum)	-7.61
Palermo Scale (cumulative)	-7.37
Impact Probability (cumulative)	9.3e-07
Number of Potential Impacts	10

V_impact	18.16 km/s
V_infinity	14.34 km/s
H	28.1
Diameter	0.008 km
Mass	7.1e+05 kg
Energy	2.8e-02 MT
all above are mean values weighted by impact probability

Analysis based on
15 observations spanning .18531 days
(2009-Nov-23.19879 to 2009-Nov-23.3841)