[meteorite-list] St. Robert entry angle

From: Matson, Robert <ROBERT.D.MATSON_at_meteoritecentral.com>
Date: Thu Apr 22 09:52:13 2004
Message-ID: <AF564D2B9D91D411B9FE00508BF1C86901B4E2CA_at_US-Torrance.mail.saic.com>

Hi All,

Peter Brown explained:

"The first of these references is from an early solution using eyewitness
only data. The second solution is the more accurate as it uses satellite
data to make the estimate of the entry angle."

I saw the discrepancy and assumed one was an early estimate.
The TKW on St. Robert (ordinary chondrite) was 25.4 kg according to
the Catalogue of Meteorites. Note the fairly slow estimated entry
velocity:

"A statistical evaluation of the likely heliocentric orbits for the
body prior to collision with the Earth, coupled with theoretical
modeling of the entry, suggests an entry velocity in the range of
12.7-13.3 km/s ..."

The minimum possible is around 11 km/sec. --Rob
Received on Tue 13 Aug 2002 04:31:14 PM PDT