* Astronomy

Blobrana · L

RE: Asteroid 2004 FU162

Blobrana · L

The 6 metre wide asteroid 2004 FU162 will pass the Earth-Moon system on the 31st March, 2011.

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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

The closest observed


	2004 FU162

asteroid yet to skim past the Earth without hitting the atmosphere:
The previously unknown object, spanning 5- 10 metres across, has been named 2004 FU162. It streaked across the sky just 6500 kilometres - roughly the radius of the Earth - above the ground on 31 March, although details have only now emerged.

Orbital elements:2004 FU162

Epoch 2004 July 14.0 TT = JDT 2453200.5

M	33.72709	(2000.0)	P	Q
n	1.31111456	Peri. 139.80776	+0.87470240	+0.48445394
a	0.8267527	Node 191.24124	-0.46121410	+0.82306453
e	0.3919592	Incl. 4.16120	-0.14892032	+0.29642732
P	0.75	H 28.7	G 0.15	U 9

Blobrana · L

2004 FU162
Earth Impact Risk Summary

Torino Scale (maximum)	0
Palermo Scale (maximum)	-5.66
Palermo Scale (cumulative)	-5.08
Impact Probability (cumulative)	6.4e-05
Number of Potential Impacts	963

V_impact	14.96 km/s
V_infinity	9.68 km/s
H	29.0
Diameter	0.006 km
Mass	3.2e+05 kg
Energy	1.1e-02 MT
all above are mean values weighted by impact probability

Analysis based on
4 observations spanning .03055 days
(2004-Mar-31.27744 to 2004-Mar-31.30799)

These results were computed on May 07, 2008

2004 FU162 Earth Impact Table
Date	Distance	Width	Sigma Impact	Sigma LOV	Stretch LOV	Impact Probability	Impact Energy	Palermo Scale	Torino Scale
`YYYY-MM-DD.DD`	(r_Earth)	(r_Earth)			(r_Earth)		(MT)
`2009-03-31.30`	`0.01`	`4.74e-01`	`0.000`	`3.61011`	`4.41e+04`	`2.3e-08`	`7.43e-04`	`-8.57`	`0`

Blobrana · L

2004 FU162 is a meteoroid which passed within about one Earth radius of the surface of the Earth at 15:35 UTC on March 31, 2004, or 2.02 Earth radii from the centre of the Earth.
As of 2006 this is the third or fourth closest approach of any such space rock. The discovery was not announced until August 22, 2004.
2004 FU162 is estimated to be only 6 meters in diameter.

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Earth Impact Risk Summary

Torino Scale (maximum)	0
Palermo Scale (maximum)	-6.37
Palermo Scale (cumulative)	-5.41
Impact Probability (cumulative)	6.2e-05
Number of Potential Impacts	821

Earth Impact Table
Date	Distance	Width	Sigma Impact	Sigma LOV	Stretch LOV	Impact Probability	Impact Energy	Palermo Scale	Torino Scale
`YYYY-MM-DD.DD`	(r_Earth)	(r_Earth)			(r_Earth)		(MT)
`2008-03-31.62`	`1.50`	`4.00e-01`	`1.254`	`-0.29733`	`8.70e+04`	`4.8e-07`	`1.34e-02`	`-6.85`	`0`