ar X iv : a st ro - p h / 98 05 12 4 v 3 1 5 Ju n 19 98 On the airbursts of large meteoroids in the Earth ’ s atmosphere
نویسنده
چکیده
On January 19, 1993, a very bright bolide (peak magnitude −23) crossed the sky of Northern Italy, ending with an explosion approximately over the town of Lugo (Emilia Romagna, Italy). The explosion (14 kton of energy) generated shock waves which were recorded by six local seismic stations. A reanalysis of the available data leads us to the hypothesis that the meteoroid was a porous carbonaceous chondrite, somehow similar in constitution to the asteroid 253 Mathilde. PACS 96.50.Kr: Meteors and meteoroids PACS 47.40.-x: Shock-wave interactions and shock effects PACS 96.30.Ys: Asteroids (minor planets) Submitted to Astronomy and Astrophysics
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