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Title:
A large lunar impact blast on 2013 September 11
Authors:
Madiedo, José M.; Ortiz, José L.; Morales, Nicolás; Cabrera-Caño, Jesús
Affiliation:
AA(Departamento de Física Atómica, Molecular y Nuclear, Facultad de Física, Universidad de Sevilla, E-41012 Sevilla, Spain; Facultad de Ciencias Experimentales, Universidad de Huelva, E-21071 Huelva, Spain ), AB(Instituto de Astrofísica de Andalucía, CSIC, Apt. 3004, Camino Bajo de Huetor 50, E-18080 Granada, Spain), AC(Instituto de Astrofísica de Andalucía, CSIC, Apt. 3004, Camino Bajo de Huetor 50, E-18080 Granada, Spain), AD(Facultad de Ciencias Experimentales, Universidad de Huelva, E-21071 Huelva, Spain)
Publication:
Monthly Notices of the Royal Astronomical Society, Volume 439, Issue 3, p.2364-2369 (MNRAS Homepage)
Publication Date:
04/2014
Origin:
OUP
Astronomy Keywords:
meteorites, meteors, meteoroids, Moon
Abstract Copyright:
2014 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society
DOI:
10.1093/mnras/stu083
Bibliographic Code:
2014MNRAS.439.2364M

Abstract

On 2013 September 11 at 20h07m28.68s ± 0.01s UTC, two telescopes operated in the framework of our lunar impact flashes monitoring project recorded an extraordinary flash produced by the impact on the Moon of a large meteoroid at selenographic coordinates 17.2° ± 0.2° S, 20.5° ± 0.2° W. The peak brightness of this flash reached 2.9 ± 0.2 mag in V and it lasted over 8 s. The estimated energy released during the impact of the meteoroid was 15.6 ± 2.5 tons of TNT under the assumption of a luminous efficiency of 0.002. This event, which is the longest and brightest confirmed impact flash recorded on the Moon thus far, is analysed here. The likely origin of the impactor is discussed. Considerations in relation to the impact flux on Earth are also made.
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