Hi Rob, Sterling and List, Rob wrote:
"I calculate the size to be at least 3 meters, possibly as much as 4.5 meters, so I'd be quite surprised if no meteorites were produced." 1) The St. Robert H5 chondrite had a preatmospheric radius between 40 and ca. 60 cm and a mass of 1000 to ca. 3000 kg comparable to the Knyahinya L chondrite. 2) The Torino H6 chondrite had a preatmospheric radius of 20 cm, corresponding to a mass of 120 kg. A number of stones totalling about 1 kg in weight were recovered. 3) Peekskill had a preatmospheric radius of ~50 cm. 4) For Jilin, Klein et al. obtained these lower and upper limits for the preatmospheric size of the body: lower limit => 54 cm / upper limit => 135 cm. Heusser and Pellas estimated that its pre-atmospheric radius was 85 cm. References: HERZOG G.F. et al. (1997) Preatmospheric size of the St. Robert (H5) chondrite (Meteoritics 32-4, 1997, A059). BHANDARI N. et al. (1989) The Torino, H6, meteorite shower (Meteoritics 24-1, 1989, 29-34). TH. GRAF et al. (1994) Size and exposure history of the Peekskill meteoroid (Meteoritics 29-4, 1994, A469). KLEIN J. et al. (1991) 41Ca in the Jilin (H5) chondrite: A matter of size (abs. Meteoritics 26-4, 1991, 358). ______________________________________________ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list