* Astronomy

Blobrana · L

RE: Asteroid 2009 UD

Blobrana · L

Closest approach at 02:12 UT, 23rd June, 2010.

Blobrana · L

The 10 - 22 metre wide asteroid 2009 UD will make a close pass (64.3 Lunar Distances, 0.1653 AU), travelling at 3.43 km/s, to the Earth-Moon system on the 23th June, 2010.

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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 UD                                                  Earth MOID = 0.0057 AU
Epoch 2010 Jan. 4.0 TT = JDT 2455200.5                  MPC
M   5.49691              (2000.0)            P               Q
n   0.93127414     Peri.  261.36947     -0.26121578     -0.96478212
a   1.0385268      Node   203.84267     +0.91306108     -0.23653311
e   0.1204911      Incl.    4.40009     +0.31318651     -0.11509797
P   1.06           H   27.2           G   0.15           U   7

MPEC 2009 - U10

The 10 - 22 metre wide asteroid 2009 UD will make a close pass (2.0 Lunar Distances, 0.0052 AU), travelling at 3.93 km/s, to the Earth-Moon system on the 20th October, 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 UD
Earth Impact Risk Summary

Torino Scale (maximum)	0
Palermo Scale (maximum)	-11.1
Palermo Scale (cumulative)	-11.07
Impact Probability (cumulative)	2.7e-10
Number of Potential Impacts	1

V_impact	11.75 km/s
V_infinity	3.74 km/s
H	27.2
Diameter	0.013 km
Mass	2.7e+06 kg
Energy	4.4e-02 MT
all above are mean values weighted by impact probability

Analysis based on
19 observations spanning .25205 days
(2009-Oct-16.33792 to 2009-Oct-16.58997)