Analysis of Moon impact flashes detected during the 2012 and 2013 Perseids

Abstract

We present the results of our Moon impact flashes detection campaigns performed around the maximum activity period of the Perseid meteor shower in 2012 and 2013. Just one flash produced by a Perseid meteoroid was detected in 2012 because of very unfavourable geometric conditions, but 12 of these were confirmed in 2013. The visual magnitude of the flashes ranged between 6.6 and 9.3. A luminous efficiency of 1.8 $\times$ 10${}^{-3}$ has been estimated for meteoroids from this stream. According to this value, impactor masses would range between 1.9 and 190 g. In addition, we propose a criterion to establish, from a statistical point of view, the likely origin of impact flashes recorded on the lunar surface.

Accepted for publication in Astronomy and Astrophysics on March 11, 2015

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• The $\rho$-Geminid meteoroid stream: orbits, spectroscopic data and implications for its parent body

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