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Post Info TOPIC: Asteroid 2012 CA21
Blobrana


L

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RE: Asteroid 2012 CA21
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The 380 - 840 metre wide asteroid 2012 CA21 will make a flyby (149 lunar distances, 0.3820 AU), travelling at 18.94 km/second, to the Earth-Moon system on the 6th March, 2012 @ 02:33 UT ±00:02.

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



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Blobrana


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2012 CA21
Earth Impact Risk Summary
Torino Scale (maximum)1
Palermo Scale (maximum)-1.87
Palermo Scale (cumulative)-1.87
Impact Probability (cumulative)1.7e-05
Number of Potential Impacts2
Vimpact23.02 km/s
Vinfinity20.15 km/s
H19.3
Diameter0.470 km
Mass1.5e+11 kg
Energy9.2e+03 MT
all above are mean values
weighted by impact probability
Analysis based on
69 observations spanning 10.977 days
(2012-Feb-12.12022 to 2012-Feb-23.09721)
 




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Blobrana


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Orbital elements:
2012 CA21                                           PHA, Earth MOID = 0.0055 AU
Epoch 2012 Mar. 14.0 TT = JDT 2456000.5                 MPC
M 359.17431              (2000.0)            P               Q
n   0.22914485     Peri.   35.67783     -0.90299957     -0.19950280
a   2.6448192      Node   128.10901     +0.18516425     -0.97989161
e   0.6576574      Incl.   28.92066     +0.38769314     +0.00332726
P   4.30           H   19.0           G   0.15           U   8

MPEC 2012 - C51



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