[meteorite-list] Bolides and Peekskill

From: Pete Pete <rsvp321_at_meteoritecentral.com>
Date: Tue Jan 17 15:32:03 2006
Message-ID: <BAY104-F212B56D3BBF0549CF39664F81A0_at_phx.gbl>

Thank you, all, for your expertise.
It makes my cantelope-sized meteorite with some black fusion crust all the
more awe-inspiring!

Still speaking of bolides, here's a decent pic I came across that one can
use as wallpaper:

http://www.dragon-vds.com/2d_meteorites.php

http://www.dragon-vds.com/2d_meteorites.php

Cheers,
Pete


From: bernd.pauli_at_paulinet.de
To: Meteorite-list_at_meteoritecentral.com
Subject: [meteorite-list] Bolides and Peekskill
Date: 17 Jan 2006 17:58:03 UT

Pete asked:

If this is a worthwhile question, how about Peekskill, which so many of us
witnessed - how large would that have been at the start of its descent?

Chris wrote:

Peekskill...an initial mass of about 10 tons, so...an almost 2 meter
diameter.

Hello List,

Graf et al. (1994) Size and exposure history of the Peekskill meteoroid
(Meteoritics 29-4, 1994, A469): Both values (= measured 26Al activities)
are consistent with a preatmospheric radius of ~50 cm.

Ceplecha Z. et al. (1994) Video observations of the Peekskill H6 meteorite
fireball - Atmospheric trajectory and orbit (Meteoritics 29-4, 1994, A455):

a) ...an initial mass of the order of 10^­4 kg and with initial velocity of
14.7 km/s

b) The dark flight of the recovered meteorite started from a height of 30
km, when
    the velocity dropped below 3 km/s, and the body continued an additional
horizontal
    distance of 50 km without ablation, until it hit a parked car in
Peekskill, NY, with
    a vertical velocity of about 80 m/s.

Graf et al. (1997) Exposure history of the Peekskill (H6) meteorite
(Meteoritics 32-1, 1997, 25-30):

[We] conclude that Peekskill's radius was less than 70 cm when it entered
the Earth's
atmosphere. This size limit is somewhat smaller than the photometric
determinations
(Brown et al., 1994).


Best wishes,

Bernd

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Received on Tue 17 Jan 2006 03:31:59 PM PST