Speaker
Description
By the personal efforts and investment of some of the present authors, an independent 6-sites allsky7 camera system were established and integrated into the Worldwide allsky7 system (AMS) in 2021 by the Hungarian Meteoritical Society. The autonomous stations maintained and operated by the owners of each given sites, while the daily operation and continuous inspection is coordinated by one of us (ZJ). The observations and calibrated results are uploaded to the AMS centre. Most promising fireballs (being observed simultaneously at least at 2 different stations) undergo not only automatic calculations of the luminous orbit, but when reasonably possible, also the “manual” dark flight analysis, with derivation of the possible strewn field, too. In this paper we present our analysis of a selected 13 pieces subsample of the brightest fireballs during 2023-2026 period. Beyond the usual routine calculations, we focused onto the effectivity of ablation, testing the "alpha-beta" method and tried to ascertain if there were some remainder mass after the luminous flight. Since only one case showed a minimal remainder mass, instead of dark flight analysis we investigated the heliocentric orbits of all members of our subsample. Using a Monte-Carlo simulation we mapped the uncertainties of the determined original heliocentric orbital elements, and tried to search for possible progenitor bodies. We used the D-criterium for obtaining some further arguments about the validity of our foundings. For some of our fireballs, we found possible NEA progenitors, while a few of the rest cases were surely cometary origin.