[meteorite-list] re: 2003 EH1, Quadrantids and Lost City

From: Marco Langbroek <marco.langbroek_at_meteoritecentral.com>
Date: Thu Apr 22 10:18:03 2004
Message-ID: <003a01c3c8e8$a67ccaf0$3bea81d4_at_HAL>

> Wasn't Lost City a Prairie Fire Ball Network find with calculated
> orbital data?
>
> Elton

Hi Elton, Dough,

Yes, and the orbit is different from 2003 EH1 and the Quadrantids in most
notably the semi-major axis (a) and the inclination (i):

object q a e i omega
node pi
Lost City 0.967 1.661 0.417 12.0 161.0 283.000
84.0
Quadrantids 0.979 3.14 0.69 72 171.2 283.3
94.5
2003 EH1 1.192 3.128 0.619 70.8 171.4 282.938
94.3

In terms of Drummond's D' criterion the orbit of Lost City compares to that
of 2003 EH1 with D' 0.40, which is four times the value usually accepted as
the
upper treshold: and to the orbit of the Quadrantids with D' 0.42. In other
words: there is not much similarity.

By contrast, the D' criterion value of 2003 EH1 to the average Quadrantid
orbit is 0.11

- Marco

------
Dr Marco Langbroek
Dutch Meteor Society (DMS)
Leiden, the Netherlands
52.15896 N, 4.48884 E (WGS 84)

meteorites_at_dmsweb.org
http://home.wanadoo.nl/marco.langbroek
------
Received on Mon 22 Dec 2003 07:05:56 PM PST