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An Earth-grazing fireball from the Daytime ζ -Perseid shower observed over Spain on 2012 June 10

 

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Opened Access An Earth-grazing fireball from the Daytime ζ -Perseid shower observed over Spain on 2012 June 10
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Author: Madiedo Gil, José María
Espartero, Francisco
Castro Tirado, Alberto J.
Pastor, Sensi
Reyes, José Antonio de los
Department: Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear
Date: 2016-07-21
Published in: Monthly Notices of the Royal Astronomical Society, 460 (1), 1-18.
Document type: Article
Abstract: On 2012 June 10, an Earth-grazer meteor which lasted over 17 s with an absolute magnitude of -4.0 ± 0.5 was observed over Spain. This work focuses on the analysis of this rare event which is, to our knowledge, the faintest Earth-grazing meteor reported in the scientific literature, but also the first one belonging to a meteor shower. Thus, the orbital parameters show that the parent meteoroid belonged to the Daytime ζ -Perseid meteoroid stream. According to our calculations, the meteor was produced by a meteoroid with an initial mass ranging between 115 and 1.5 kg. During its encounter with Earth, the particle travelled about 510 km in the atmosphere. Around 260 g were destroyed in the atmosphere during the luminous phase of the event as a consequence of the ablation process. The modified orbit of the remaining material, which left our planet with a fusion crust, is also calculated.
Cite: Madiedo, J.M., Espartero, F., Castro Tirado, A.J., Pastor, S. y Reyes, J.A.d.l. (2016). An Earth-grazing fireball from the Daytime ζ -Perseid shower observed over Spain on 2012 June 10. Monthly Notices of the Royal Astronomical Society, 460 (1), 1-18.
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URI: http://hdl.handle.net/11441/64271

DOI: 10.1093/mnras/stw1020

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