Four researchers from the Isotope Physics Group have contributed cosmogenic radionuclide data and its interpretation for a recent publication in Nature Astronomy. Within a large international collaboration, involving nearly one hundred researchers worldwide, the asteroid 2023 CX1 was tracked from space until its impact on Earth. This first comprehensive study focuses on both science and planetary defence.

Shortly after the impact on 13^th February 2023 in Normandy, France, material from several stony meteorite pieces was analysed at the Vienna Environmental Research Accelerator (VERA) using instrumental accelerator mass spectrometry (IAMS). The resulting ²⁶Al and ⁴¹Ca data helped constraining the preatmospheric diameter of the asteroid to be between 66 and 78 cm, representing a total weight of about 650 kg.

https://science.apa.at/power-search/1069015177443605870

https://www.derstandard.at/story/3000000288055/studie-zeigt-versaeumnisse-in-bisherigen-modellen-zu-impaktgefahren-auf?ref=rss

https://science.orf.at/stories/3232059/

https://www.diepresse.com/20112948/asteroid-2023-cx1-war-zerstoererischer-als-gedacht

https://www.youtube.com/watch?v=7kjliXyLiJ8