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Journal of Physical Studies 25(4), Article 4902 [6 pages] (2021)
DOI: https://doi.org/10.30970/jps.25.4902 GROUPS OF METEORITES AND METEORITE-DROPPING FIREBALLS IN ASTEROIDAL ORBITS
Yu. M. Gorbanev{1}
{1}Astronomical Observatory of Odesa National University,
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This paper presents the results of a study of the existence of nine near-Earth meteorite-producing groups in asteroidal orbits, containing sporadic fireballs from the IAU MDC-2007 database, sporadic meteors from the SonotaCo database, meteorites – namely, $L5$, $L6$ and $H4-H6$ ordinary chondrites and an ureilite, for which atmospheric and orbital parameters are known from instrumental observations. Orbits of the selected members of meteorite-producing groups were classified as asteroid orbits according to the Tisserand parameter $T_{j}>3.1$.
Dynamic links between the members of the identified meteorite-producing groups and instrumentally observed known meteorites which were taken as a reference for the search of potential group members were tested using orbital similarity criteria, in particular the Drummond criterion – $D_{\rm D}$ and the Southworth and Hawkins criterion – $D_{\rm SH}$. As a result, several meteorite-dropping sporadic fireballs and small meteors, whose orbits are similar to the asteroid orbits of nine known meteorites, were detected and reckoned as possible members of meteorite-producing groups.
Key words: meteorite-producing group, meteor, fireball, meteorite, ordinary chondrite, Earth-crossing orbit
