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.

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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
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article

Al‐Khadhaf: The first camera‐observed (H5–6) meteorite fall from Oman

I. Leya, Beat Booz, S. Lindemann, Edwin Gnos et al.
Meteoritics and Planetary Science
Astro and Planetary Science
article

Al‐Khadhaf: The first camera‐observed (H5–6) meteorite fall from Oman

I. Leya, Beat Booz, S. Lindemann, Edwin Gnos, Sophie Deam, Pascal M. Kruttasch, Anna Zappatini, M. Micheli, Mohammad Tauseef, 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
article en

Abstract

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.

Meteoritics and Planetary ScienceVol. 61(3)
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)
Openalex Percentile: Top 51%
Astro and Planetary Science
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