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The Tracking Ultraviolet Set-up (TUS) is the world's first orbital imagingdetector of Ultra High Energy Cosmic Rays (UHECR) and it operated in 2016-2017as part of the scientific equipment of the Lomonosov satellite. The TUS wasdeveloped and manufactured as a prototype of the larger project K-EUSO with themain purpose of testing the efficiency of the method for measuring theultraviolet signal of extensive air shower (EAS) in the Earth's nightatmosphere. Despite the low spatial resolution ($\sim5\times5$ km$^2$ at sealevel), several events were recorded which are very similar to EAS as for thesignal profile and kinematics. Reconstruction of the parameters of such eventsis complicated by a short track length, an asymmetry of the image, and anuncertainty in the sensitivity distribution of the TUS channels. An advancedmethod was developed for the determination of event kinematic parametersincluding its arrival direction. In the present article, this method is appliedfor the analysis of 6 EAS-like events recorded by the TUS detector. All eventshave an out of space arrival direction with zenith angles less than 40{\deg}.Remarkably they were found to be over the land rather close to United Statesairports, which indicates a possible anthropogenic nature of the phenomenon.Detailed analysis revealed a correlation of the reconstructed tracks withdirection to airport runways and Very High Frequency (VHF) omnidirectionalrange stations. The method developed here for reliable reconstruction ofkinematic parameters of the track-like events, registered in low spatialresolution, will be useful in future space missions, such as K-EUSO.

Kinematics reconstruction of the EAS-like events registered by the TUS detector