Astronomy and Astrophysics – Astronomy
Scientific paper
Aug 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987maph...25..255r&link_type=abstract
In International Council of Scientific Unions, Middle Atmosphere Program. Handbook for MAP, Volume 25 p 255-257 (SEE N88-14502 0
Astronomy and Astrophysics
Astronomy
Bolides, Height, Kinetic Energy, Meteoritic Composition, Astronomical Photometry, Meteor Trails, Meteoroid Showers
Scientific paper
Previous analyses of meteoroid compositional groupings have utilized the end height of fireballs as a diagnostic tool. From an observational perspective this definition is straight forward, but from a theoretical viewpoint there are problems with using this operational definition. In order to realistically assess the estimated geometric uncertainty of + 1 km in the observed end height, a theoretical definition of the end height of meteoritic fireballs is proposed using the results from the integral radiation efficiency model of ReVelle. Three photographed and recovered meteorites are used as a calibration for this proposed definition. This definition was used to evaluate the end height of all fireballs that were deduced by Wetherill and ReVelle as being meteoritic. In almost all cases the theoretical values are lower than the observed values, in some cases as much as 5 km lower. A preliminary summary of results are given.
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