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This paper presents the abundances and the size-frequency distributions (SFD)of the ejected boulders surrounding the Linne crater, located on the Moon'sMare Serenitatis basin. By means of Lunar Reconnaissance Orbiter Camerahigh-resolution images we prepare a context geological map of the Linne crateras well as we identify 12000 boulders > 4.4 m, with a maximum measured size of30.8 m. The cumulative number of boulders per km2 is fitted with a power-lawcurve with index -4.03 +0.09/-0.10. By studying the radial ejecta abundances,we find that the largest ones are located within the first 2 km from thecrater's centre, while few tens of boulders with sizes < 8 m are detectableabove 5 km from the crater's rim. We find that the Linne proximal ejectablanket is slightly asymmetrical, as indicated in the geological map too,showing a density increase in the NE-SW direction. This may be the result of anoblique impact emplacement of the original impactor, or it may be explainedwith a perpendicular impact in the Mare Serenitatis location, but on a surfacewith lunar basalts with different local mechanical properties. By exploitingour boulders size density as a function of the distance from the crater'scentre, we derive a possible regolith thickness at the Linne impact of 4.75 m,supporting similar values based on Earth-based radar and optical data in theMare Serenitatis basin.

Abundance and size-frequency distributions of boulders in Linne crater's ejecta (Moon)