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3 papers
Observations of the 2023 February 27 fireball in northern Sweden using the auroral imaging system ALIS_4D
Gabriel Borderes-Motta, Daniel Kastinen, Tima Sergienko +7
On 2023 February 27 at 18:15:55.77 UT, a bright fireball streaked across the sky above northern Sweden. The event offered a valuable opportunity to study the phenomenon using an op…
The First Instrumentally Documented Fall of an Iron Meteorite: atmospheric trajectory and ground impact
Jarmo Moilanen, Maria Gritsevich, Jaakko Visuri
Iron meteorite falls are rare compared to stony meteorites, and until recently no iron meteorite had a reliably determined pre-atmospheric orbit. This changed on 2020 November 7, w…
Distance-Independent Atmospheric Refraction Correction for Accurate Retrieval of Fireball Trajectories
Jaakko Visuri, Maria Gritsevich, Janne Sievinen
Accurate determination of fireball direction is essential for retrieving trajectories and velocities. Errors in these measurements have significant implications, affecting the calc…