Meteoric aspects of the Earth-grazing asteroid 2004 FH

Details Meteoric aspects of the Earth-grazing asteroid 2004 FH Meteoric aspects of the Earth-grazing asteroid 2004 FH

Jul 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004jimo...32...84l&link_type=abstract

WGN, Journal of the International Meteor Organization, vol. 32, no.3, p.84-86

Computer Science

Scientific paper

A search for meteors potentially associated with the recent spectacular earthgrazing asteroid 2004 FH in the IAU photographic meteor database yields three meteors from the Harvard project, which is probably not enough to support the notion that 2004 FH is one of the larger meteoroids in a stream. The theoretical radiant is located at alpha = 226 g, delta = -4 g (for March 19), and meteors would have v_infty of about 13.2 km/s, which is very slow. Asteroid 2004 FH would only be dangerous if it is an M-class asteroid. A stony asteroid of this size and speed would disintegrate almost completely in the atmosphere without doing much harm. An M-class (iron) asteroid, however, would shower down fragments weighing many tons, creating a crater field with craters up to 100+ meters wide, and serious blast damage within a few kilometers.

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