Al‐Khadhaf: The first camera‐observed (H5–6) meteorite fall from Oman
Abstract A fireball camera system installed in 2022 by the Oman Meteorite Monitoring Project (OMMP) as part of the Global Fireball Observatory (GFO) recorded a 3.2 s fireball on March 8, 2022 at 8:15 p.m. UTC. A meteoroid of 4 ± 2 kg entered the atmosphere at 14.0 km/s. Its trajectory, with a slope of 68.4°, started at 67.6 km and ended at 30.2 km where the meteoroid traveled at 7.36 km/s. Approximately 50 g survived atmospheric entry. On February 7, 2023, two meteorites of 13.85 g and 8.21 g were recovered at the predicted site. Gamma spectrometry confirmed their young terrestrial age via short‐lived cosmogenic radionuclides 54 Mn and 22 Na. Al‐Khadhaf is thus the first camera‐observed meteorite fall from Oman. Petrography and mineral composition classify it as an ordinary H5–6 S2 W1 chondrite. Its pre‐impact orbit ( a = 1.72 AU, e = 0.45, i = 4.36°) is consistent with asteroid‐belt delivery, with both inner‐belt and Koronis‐family sources remaining plausible. The cosmic ray exposure age of 8.57 ± 1.2 Ma coincides with an exposure‐age peak observed among H chondrites. Al‐Khadhaf adds to the record of camera‐observed falls, linking meteorite compositions to their solar system context via orbit calculations.
Authors
- I. Leya (ORCID: https://orcid.org/0000-0002-3843-6681)
- Beat Booz
- S. Lindemann (ORCID: https://orcid.org/0000-0002-4501-7231)
- Edwin Gnos (ORCID: https://orcid.org/0000-0003-0940-8435)
- Sophie Deam (ORCID: https://orcid.org/0000-0003-1955-628X)
- Pascal M. Kruttasch (ORCID: https://orcid.org/0000-0002-6848-3753)
- Anna Zappatini (ORCID: https://orcid.org/0000-0002-3020-4296)
- M. Micheli (ORCID: https://orcid.org/0000-0001-7895-8209)
- Mohammad Tauseef (ORCID: https://orcid.org/0000-0002-9773-2595)
- Frank Gfeller
- P. Jenniskens
- Abdulmunaim A. Al‐Zakwani
- Hussain A. Al‐Ghafri
- Thomas W. C. Stevenson
- Muati. S. Al‐Muati
- Martin Cupák
- Urs Eggenberger
- Beda A. Hofmann
- Eleanor K. Sansom
Institutions
- University of Bern (CH)
- Ames Research Center (US)
- Federal Office of Meteorology and Climatology MeteoSwiss (CH)
- University of Freiburg (DE)
- Curtin University (AU)
- Natural History Museum of Geneva (CH)
- Natural History Museum of Bern (CH)
- Ministry of Health (UA)
- International Centre for Radio Astronomy Research (AU)
- International Space Science Institute (CH)
- Search for Extraterrestrial Intelligence (US)
Publication Details
- Journal
- Meteoritics and Planetary Science
- Published
- 2026-02-16
- DOI
- https://doi.org/10.1111/maps.70110
- Primary Topic
- Astro and Planetary Science
- Type
- article
- Field-Weighted Citation Impact
- 0.00