(meteorobs) New parent body?

meteoreye at comcast.net meteoreye at comcast.net
Tue Apr 22 13:30:36 EDT 2008


2008 HE has (temporarily) been added to the JPL risk page.
There are 6 LOW risk impacts listed beginning in 2036, the highest one ~ 3 in 10 million.
The observational arc is up to 3 days, which is still inconsequential. It's not even worth attempting to descibe a potential radiant with this level of uncertainty.
EMOID is now 0.866, but the nodes (when the asteroid orbit crosses the plane of the earth's; hence when meteor showers can occur) are well inside Mercury's orbit, and near Jupiter's orbit.
Besides asteroids are rarely meteor shower sources.
http://neo.jpl.nasa.gov/risk/2008he.html
http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2008+HE;orb=1

This can safely be dismissed as a source of meteors.
MW

-------------- Original message -------------- 
From: "Roberto G." <md6648 at mclink.it> 

> Circolar MPEC 2008-H12 of today report the discovery of: 2008 HE 
> 
> http://cfa-www.harvard.edu/mpec/K08/K08H12.html 
> 
> the orbital elements of this formaly asteroid are very unusuals, it can to 
> be 
> a parent body of a meteor shower (Earth Moid 0.0810 AU) at the end of 
> October - begin November, naturally with an orbital arc of only 2 days this 
> orbit it's not certain and it shall be modified in the next days, someone 
> can 
> to calculate the radiant and see if it was observed in the past? 
> Best greetings. 
> Roberto Gorelli 
> 
> 
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