[meteorite-list] Observed lunar meteorite impacts (distribution)
From: Chris Peterson <clp_at_meteoritecentral.com>
Date: Thu, 22 May 2008 00:04:03 -0600 Message-ID: <028b01c8bbd1$a982a6d0$0a01a8c0_at_bellatrix> Most of these explosions were captured during meteor showers. I'd guess the uneven distribution simply reflects where the imagers were looking at those times, and possibly the FOV of the imaging systems. Given an average phase of 50%, you'd expect most of the recorded hits to be towards the limbs. There is a bias towards the first quarter over the third quarter, which is probably explained by the fact that more imaging time was spent before midnight than after. Chris ***************************************** Chris L Peterson Cloudbait Observatory http://www.cloudbait.com ----- Original Message ----- From: "Piper R.W. Hollier" <piper at xs4all.nl> To: <meteorite-list at meteoritecentral.com> Sent: Wednesday, May 21, 2008 11:46 PM Subject: Re: [meteorite-list] Observed lunar meteorite impacts (distribution) > Dear Mark and list, > > For me the distribution of impact sites shown on the second image "A > map of the 100 explosions observed since late 2005" runs counter to my > intuition. Why is the distribution not more uniform? There are large > areas, especially near the poles, with no impacts recorded, while > other areas have rather dense clustering of impact observations. > Comets often have highly inclined orbits, so it seems that we should > expect some impacts near the poles. > > Any ideas out there? > > Piper Received on Thu 22 May 2008 02:04:03 AM PDT |
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