[meteorite-list] St. Robert entry angle - Contradictory statements

From: Bernd Pauli HD <bernd.pauli_at_meteoritecentral.com>
Date: Thu Apr 22 09:52:13 2004
Message-ID: <3D596758.B832343B_at_lehrer.uni-karlsruhe.de>

"Matson, Robert" wrote:

> I would be curious to know what the estimated angles were for
> Peekskill, Tagish Lake and the recent Bavarian fall. I suspect
> they are all 25 degrees or less.

Hello Everybody,

BROWN P. et al. (1995) The fall of the St. Robert meteorite:
Interpretation of eyewitness accounts, satellite data, short-
lived isotope activity and infrasound (abs. Meteoritics 30, 492):

Interpretation of the eyewitness data suggests that the fireball
traveled from SSW to NNE with a moderate slope from the horizontal
of 15°-35°. An evaluation of the probable orbit for the meteoroid
suggests an entry velocity in the range of 12-15 km/s. The object
moved in a low-inclination orbit with perihelion very near the
Earth's orbit.

BROWN P. et al. (1996) The fall of the St. Robert
meteorite (Meteoritics 31-4, 1996, 502-517):

Interpretation of the visual and satellite data suggests that the
fireball traveled from south-southwest to north-northeast, with a
slope from the horizontal of 55°- 61°. 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 meteoroid had
moved in a low-inclination orbit, with orbital perihelion located
extremely close to the Earth's orbit.


Best wishes,

Bernd
Received on Tue 13 Aug 2002 04:08:56 PM PDT