* Astronomy

Blobrana · L

RE: Asteroid 2009 UD2

Blobrana · L

Asteroid 2009 UD2 has just passed the Earth.

Blobrana · L

The 92 - 210 metre wide asteroid 2009 UD2 will make a close pass (14.9 Lunar Distances, 0.0384 AU), travelling at 6.45 km/s, to the Earth-Moon system on the 19th February, 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

2009 UD2
Earth Impact Risk Summary

Torino Scale (maximum)	0
Palermo Scale (maximum)	-7.49
Palermo Scale (cumulative)	-6.83
Impact Probability (cumulative)	6.5e-09
Number of Potential Impacts	16

V_impact	12.32 km/s
V_infinity	5.25 km/s
H	22.3
Diameter	0.112 km
Mass	2.1e+09 kg
Energy	3.7e+01 MT
all above are mean values weighted by impact probability

Analysis based on
15 observations spanning 1.2015 days
(2009-Oct-18.13461 to 2009-Oct-19.33614)

Blobrana · L

Orbital elements:
2009 UD2                                                 Earth MOID = 0.0340 AU
Epoch 2010 Jan. 4.0 TT = JDT 2455200.5                  MPC
M 348.09848              (2000.0)            P               Q
n   0.64365818     Peri.  110.68454     -0.41211404     -0.91112144
a   1.3285131      Node     3.66226     +0.80793256     -0.36768534
e   0.2893729      Incl.    3.98795     +0.42119710     -0.18618596
P   1.53           H   22.3           G   0.15           U   9

MPEC 2009 - U37