Košice meteorite - recovery and the strew field
Abstract
The glare of the bolide on the night of February 28, 2010, illuminated streets and interior of apartments, at some places in Eastern Slovakia and Northern Hungary and cannon-like burst or series of low frequency blasts were heard. Due to bad weather, cloudy skies and scatter showers the Central European Fireball Network (operated by Pavel Spurný of the Czech Academy of Sciences) did not take direct optical records of the bolide and also the Slovak Video Meteor Network (operated by Juraj Tóth of Comenius University in Bratislava) did not operate that night so that at first moment it seemed that there were no scientific records available of this event. Fortunately, fast photoelectric sensors on 7 automated fireball stations in the Czech Republic (6) and Austria (1) worked also under cloudy sky and recorded the light curve of the bolide. It enabled to determine the exact time and duration of the event and to estimate its brightness as well. The bolide reached the maximum brightness of at least -18 magnitudes in one huge flare. This light curve was used also for modeling of meteoroid atmospheric fragmentation. Later, several surveillance cameras data were published showing the moment when the night became a day. Three videos from Hungary (Örkény village, Fazzi Daniella and Vass Gábor; Telki village, contact persons Sárneczky Krisztián, Kiss László and Budapest) actually captured the fireball itself. Thanks to calibration of videos by several members of the Hungarian Astronomical Association (MCSE - www.mcse.hu, namely by Igaz Antal) and the trajectory analysis done by Jiří Borovička gave the hope that significant number of meteorite fragments reached the surface. He also calculated the impact area western of the city of Košice in Eastern Slovakia. The data from the Local Seismic Network of Eastern Slovakia (Peter Moczo of the Comenius University) analyzed by Pavel Kalenda confirmed the atmospheric trajectory as well [1].
- Publication:
-
European Planetary Science Congress 2012
- Pub Date:
- September 2012
- Bibcode:
- 2012epsc.conf..708T