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Modern Dynamic Methods of Determination of Parameters of Meteor Bodies

Авторы: M. I. Gritsevich

Журнал: Protecting the Earth against Collisions with Asteroids and Comet Nuclei In: A. M. Finkelstein, W. F. Huebner, V. A. Shor (Eds) Proceedings of the International Conference “Asteroid-Comet Hazard-2009”, StP: Nauka, 174–178

Год: 2010

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Ключевые слова: Very Long Baseline Interferometry (VLBI), Near Earth Objects (NEOs), meteor bodies, meteoroid parameters, the fireballs' mass, body deceleration in the atmosphere, luminosity, drag and ablation of meteors and bolides, the luminous segment of the trajectory

In this study we will consider a dynamical approach to evaluating meteoroid parameters from observational data. The study takes an approach in modelling the fireballs' mass and other properties from the rate of body deceleration in the atmosphere as opposed to conventionally used luminosity. An analytical model of the atmospheric entry is calculated for registered fireballs using published observational data and evaluating parameters describing drag and ablation of meteors and bolides along the luminous segment of the trajectory. One of the special features of this model is the possibility of considering a change in body shape during its motion in the atmosphere