Statistics – Computation
Scientific paper
May 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997p%26ss...45..541s&link_type=abstract
Planetary and Space Science, v. 45, p. 541-555.
Statistics
Computation
9
Scientific paper
The precise data including atmospheric trajectories, velocities, brightnesses and orbits of 32 bright and well determined fireballs photographed mostly in the Czech part of the European Fireball Network are presented. All these fireballs have been photographed during the period 1993-1996. Three of these 32 fireballs have a significant terminal mass exceeding 1 kg, another seven belong to the known meteor streams. Nine fireballs are members of the fireball group I, seven belong to group II, 12 to group IIIA, and finally four fireballs are members of group IIIB. The actual state and possibilities of the multistational fireball photography in Czech Republic are also discussed. The new approach in the reduction of all-sky photographic records have been used in computation of all published fireballs and is demonstrated in detail on the one, very bright and deep penetrating fireball, which has been photographed from nine Czech fireball stations in the night of April 22, 1995. The very high accuracy of all parameters describing the atmospheric trajectory of this fireball enabled us to use the new gross-fragmentation model for a determination of very precise dynamic data. Moreover, one grating and two prism spectral records of very good quality were taken at the nearest station-Ondřejov Observatory. The spectra show that the meteoroid was certainly stony and probably a chondrite. It is one of the best ever documented EN fireballs. Some other interesting cases are also briefly described.
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