(meteorobs) New parent body?

meteoreye at comcast.net meteoreye at comcast.net
Tue Apr 22 14:07:59 EDT 2008


There are a dozen or more of these risk objects discovered every month nowadays (though few as large as this one). It's not worth getting worked up about an observational arc of a few days when the uncertainties allow the object to be on either side of the solar system at the next close approach.
There are plenty of closer objects with longer arcs.
A short search:
2008 AF4 EMOID 0.0023 AU
2008 ER7 EMOID 0.0014 AU
2008 DB EMOID 0.0016 AU

The highest risk object for an earth impact, 2008 VK184, EMOID 0.0007 AU
2nd highest risk, Apophis (2004 MN4) EMOID 0.0024 AU.

My point is, don't follow each new discovery; the uncertainties in orbit are too large to be useful until weeks of observations are recorded.

The objects I listed have been observed much longer, so the rsiks are much more realistic, as is the EMOID, and the nodal crossings.

Wayne


> Very interesting, it's as I wrote, the orbit it's 
> changing for more long arc of observational data, 
> I think that it shall be change newly: it's certainly 
> that we cannot to talk now on possible meteor showers, 
> but it's a object to follow for the definitive orbit. 
> Best greetings. 
> Roberto gorelli 
> 
> 
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