[meteorite-list] Questions regarding Unclassified meteorite sales

From: Michael Farmer <meteoritehunter_at_meteoritecentral.com>
Date: Sun Nov 6 11:19:39 2005
Message-ID: <009e01c5e2ed$c87b7db0$0200a8c0_at_S0031628003>

That is correct, we only have the orbits for a few meteorite falls, and they
must be filmed and photographed to obtain orbit.
Mike
----- Original Message -----
From: "Chris Peterson" <clp_at_alumni.caltech.edu>
To: <meteorite-list_at_meteoritecentral.com>
Sent: Sunday, November 06, 2005 9:15 AM
Subject: Re: [meteorite-list] Questions regarding Unclassified meteorite
sales


> You can't determine anything about orbits from strewn fields, even knowing
> the date and time of the fall. Except in rare cases (such as Sikhote-Alin)
> where the body retains cosmic velocity to, or nearly to, the ground, the
> direction of strewn fields are determined solely by aerodynamics- mostly
> by the atmospheric wind profile. A meteoroid entering from east to west
> can easily produce a strewn field extending from west to east (or north to
> south, or any other orientation).
>
> Chris
>
> *****************************************
> Chris L Peterson
> Cloudbait Observatory
> http://www.cloudbait.com
>
>
> ----- Original Message -----
> From: "Darren Garrison" <cynapse_at_charter.net>
> To: <meteorite-list_at_meteoritecentral.com>
> Sent: Sunday, November 06, 2005 9:10 AM
> Subject: Re: [meteorite-list] Questions regarding Unclassified meteorite
> sales
>
>
> I tend to disagree with most of your points here. With fossils and human
> artifacts, the context and
> stratigraphy and associated artifacts are highly important to
> understanding the fossil or artifact.
> But with a meteorite, where it landed and when it was found and who found
> it and the size of the
> original chunk are very superficial matters. It would be interesting to
> be able to determine the
> orbit of the original fragment, but (and correct me if I'm wrong) to
> deduct orbits from the
> shape/directon of strewn feilds, don't you need to know WHEN it hit?
> Wouldn't you need to know what
> time of day, and what day of the year before you could use that strewn
> feild data to get the orbit?
>
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Received on Sun 06 Nov 2005 11:18:45 AM PST