Consistency between dynamical modeling and photometrically derived masses of fireballs
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arXiv
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| Natura: | Preprint |
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2026
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| author | Peña-Asensio, Eloy Gritsevich, Maria |
| author_facet | Peña-Asensio, Eloy Gritsevich, Maria |
| contents | We present a three-point inverse solution for reconstructing meteoroid deceleration and mass-loss histories from sparse observations constrained only by the entry, peak-brightness, and terminal points. The method combines the $α$-$β$ analytical formalism with a derivative-free global optimizer and a numerical inversion of the height-velocity relation, enabling the retrieval of physically consistent solutions even when full velocity profiles are unavailable. Applied to the 2017-2018 European Fireball Network (EN) catalog, the approach achieves an 88% convergence rate when fitting only height-velocity pairs, and 63% when terminal and initial masses are also imposed. 52% of mass-constrained solutions (34% overall) yield bulk densities consistent with their $PE$ classes, with higher strength emerging as the primary discriminator among events retaining coherent classifications when only 3 points are used as input data. Rapidly evolving high-energy, high-mass events show the largest incompatibility with the $α$-$β$ model. The inversion produces a continuous bulk-density distribution spanning $\sim$300-4000 kg$\,$m$^{-3}$, in contrast to the discrete densities fixed by $PE$-based categories. The EN fireball dataset is now supplemented with self-consistent $α$ and $β$ estimates. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2605_09452 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Consistency between dynamical modeling and photometrically derived masses of fireballs Peña-Asensio, Eloy Gritsevich, Maria Earth and Planetary Astrophysics We present a three-point inverse solution for reconstructing meteoroid deceleration and mass-loss histories from sparse observations constrained only by the entry, peak-brightness, and terminal points. The method combines the $α$-$β$ analytical formalism with a derivative-free global optimizer and a numerical inversion of the height-velocity relation, enabling the retrieval of physically consistent solutions even when full velocity profiles are unavailable. Applied to the 2017-2018 European Fireball Network (EN) catalog, the approach achieves an 88% convergence rate when fitting only height-velocity pairs, and 63% when terminal and initial masses are also imposed. 52% of mass-constrained solutions (34% overall) yield bulk densities consistent with their $PE$ classes, with higher strength emerging as the primary discriminator among events retaining coherent classifications when only 3 points are used as input data. Rapidly evolving high-energy, high-mass events show the largest incompatibility with the $α$-$β$ model. The inversion produces a continuous bulk-density distribution spanning $\sim$300-4000 kg$\,$m$^{-3}$, in contrast to the discrete densities fixed by $PE$-based categories. The EN fireball dataset is now supplemented with self-consistent $α$ and $β$ estimates. |
| title | Consistency between dynamical modeling and photometrically derived masses of fireballs |
| topic | Earth and Planetary Astrophysics |
| url | https://arxiv.org/abs/2605.09452 |