Astron. Astrophys. 342, L1-L4 (1999)

Letter to the Editor

A solution for the Tunguska event

Luigi Foschini

CNR - Institute FISBAT, Via Gobetti 101, I-40129 Bologna, Italy (e-mail: L.Foschini@fisbat.bo.cnr.it)

Received 1 September 1998 / Accepted 10 December 1998

Abstract

This letter presents a new solution for the Tunguska event of June 30th, 1908. The solution has been obtained starting from seismic data, is in fair agreement with the observational evidence, and supports the asteroidal hypothesis for the origin of the Tunguska cosmic body. It is based on an improved model of the hypersonic flow around a small asteroid in the Earth's atmosphere.

Key words: meteors, meteoroids minor planets, asteroids

This article contains no SIMBAD objects.

Contents

• 1. Introduction
• 2. Current models
• 3. Hypersonic flow
• 4. The importance of the stagnation temperature
• 5. A new analysis of the Tunguska event
• 6. Conclusions
• Acknowledgements
• References

© European Southern Observatory (ESO) 1999

Online publication: December 22, 1998
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