A collision is always a possibility, although the probability of that is very small. But I think it can be largely ruled out in the case of 17P since this isn't the first time it's done this- it was discovered during a similar outburst. So it seems likely this is some poorly understood feature of it's makeup.

Chris

*****************************************
Chris L Peterson
Cloudbait Observatory
http://www.cloudbait.com


----- Original Message ----- From: "E.P. Grondine" <[EMAIL PROTECTED]>
To: <[email protected]>
Sent: Saturday, October 27, 2007 12:40 AM
Subject: Re: [meteorite-list] 17P Holmes


Hi all -

Thanks, Chris - I guess the new orbit will be
determined soon.

Perhaps something started the outgassing.  Barring a
gravitational force, or just an "ordinary"
disintegration, wouldn't collision be possible? Or if
there was a disintegration into cometissimals...

E.P. Grondine
-list
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