Analysis of a Low Density Meteoroid with Enhanced Sodium |
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| Authors: | Jiří Borovička Pavel Koten Pavel Spurný Rostislav Štork |
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| Institution: | (1) Astronomical Institute of the Academy of Sciences, Fričova 298, 25165 Ondřejov, Czech Republic |
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| Abstract: | We present an analysis of sporadic meteor number 07406018, observed by image intensified video cameras at two stations, which
showed a pronounced deceleration along its trajectory. We have applied the erosion model to analyze simultaneously the deceleration
and light curve. We have found that the meteoroid had a low density of about 500 kg m−3, consistent with its cometary orbit. The meteoroid structure was, nevertheless, markedly different from the Draconid meteoroids,
studied recently with the same model. The size of the constituent grains was larger and the erosion energy was higher than
in Draconids. The meteor spectrum was also different from Draconid spectra and showed very bright Na lines. The meteoroid
composition was probably different from normal cometary composition. |
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| Keywords: | Meteors Meteoroids Comets Composition |
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