Atmospheric fragmentation of meteoriods

Details Atmospheric fragmentation of meteoriods Atmospheric fragmentation of meteoriods

Nov 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993a%26a...279..615c&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 279, no. 2, p. 615-626

Astronomy and Astrophysics

Astrophysics

73

Ablation, Atmospheric Effects, Bolides, Fragmentation, Mathematical Models, Photographs, Trajectory Analysis, Dynamic Pressure, Least Squares Method, Meteor Trails, Precision, Standard Deviation, Time Dependence

Scientific paper

The single body theory of meteoroid interaction with the atmosphere in the form of l = l(t), where l is the relative distance along the meteoroid trajectory and t the relative time, is generalized by allowing for points of sudden gross-fragmentation. This theory can be directly applied to photographic observations of meteors, comparing the measured distance, lobs, with the model computed distance, l, by means of the least-squares method. The single body model applied to theoretically computed data for a meteoroid with fragmentation points enabled insight into time dependence of residuals, their relation to position of fragmentation point and influence on the resulting ablation coefficient, initial velocity and mass. A computer program for automatic search of gross-fragmentation points was applied to 80 records of Prairie Network (PN) fireballs. We give a list of classified fireballs containing all PN fireballs, to which we applied our model. We discuss the precision of our results with special attention to the Lost City fireball.

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