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The impact and recovery of asteroid 2018 LA

文献类型：期刊论文

作者Jenniskens, Peter42,43; Gabadirwe, Mohutsiwa41; Yin, Qing-Zhu40; Proyer, Alexander39; Moses, Oliver38; Kohout, Tomas1,37; Franchi, Fulvio39; Gibson, Roger L.36; Kowalski, Richard35; Christensen, Eric J.35
刊名METEORITICS & PLANETARY SCIENCE
出版日期2021-04-23
页码50
ISSN号1086-9379
DOI10.1111/maps.13653
英文摘要The June 2, 2018 impact of asteroid 2018 LA over Botswana is only the second asteroid detected in space prior to impacting over land. Here, we report on the successful recovery of meteorites. Additional astrometric data refine the approach orbit and define the spin period and shape of the asteroid. Video observations of the fireball constrain the asteroid's position in its orbit and were used to triangulate the location of the fireball's main flare over the Central Kalahari Game Reserve. Twenty-three meteorites were recovered. A consortium study of eight of these classifies Motopi Pan as an HED polymict breccia derived from howardite, cumulate and basaltic eucrite, and diogenite lithologies. Before impact, 2018 LA was a solid rock of similar to 156 cm diameter with high bulk density similar to 2.85 g cm(-3), a relatively low albedo p(V) similar to 0.25, no significant opposition effect on the asteroid brightness, and an impact kinetic energy of similar to 0.2 kt. The orbit of 2018 LA is consistent with an origin at Vesta (or its Vestoids) and delivery into an Earth-impacting orbit via the nu(6) resonance. The impact that ejected 2018 LA in an orbit toward Earth occurred 22.8 +/- 3.8 Ma ago. Zircons record a concordant U-Pb age of 4563 +/- 11 Ma and a consistent Pb-207/Pb-206 age of 4563 +/- 6 Ma. A much younger Pb-Pb phosphate resetting age of 4234 +/- 41 Ma was found. From this impact chronology, we discuss what is the possible source crater of Motopi Pan and the age of Vesta's Veneneia impact basin.
WOS关键词RAY EXPOSURE AGES ; 4 VESTA ; HED METEORITES ; NOBLE-GASES ; NATURAL THERMOLUMINESCENCE ; COLLISIONAL HISTORY ; STONY METEORITES ; CONSTRAINTS ; REGOLITH ; EUCRITE
资助项目Botswana Geoscience Institute ; Department of National Museum & Monuments in Botswana ; ARC LIEF grant from the Australian Research Council[LE130100104] ; Academy of Finland[293975] ; Academy of Finland[335595] ; Institute of Geology of the Czech Academy of Sciences[RVO 67985831] ; Dutch Research Council (NWO VIDI project)[864.14.005] ; National Natural Science Foundation of China[41403055] ; Swiss National Science Foundation ; European Research Council (FP7) ERC-2013-SyG[610256 NANOCOSMOS] ; Europlanet ; European Union's Horizon 2020 research and innovation programme[654208] ; National Aeronautics and Space Administration[80NM0018D0004] ; NASA ; NASA's Planetary Defense Coordination Office ; NASA SSERVI Center for Asteroid and Lunar Surface Science (CLASS) ; Simons Foundation (SCOL award)[302497] ; NASA Astrobiology Institute ; NASA Goddard Center for Astrobiology ; NASA Emerging Worlds Program[NNX16AD34G] ; Hayabusa2 Program ; NASA NEOO program[NNX14AR92G] ; NASA SSO program[80NSSC18K0854]
WOS研究方向Geochemistry & Geophysics
语种英语
出版者WILEY
WOS记录号WOS:000643151800001
资助机构Botswana Geoscience Institute ; Botswana Geoscience Institute ; Department of National Museum & Monuments in Botswana ; Department of National Museum & Monuments in Botswana ; ARC LIEF grant from the Australian Research Council ; ARC LIEF grant from the Australian Research Council ; Academy of Finland ; Academy of Finland ; Institute of Geology of the Czech Academy of Sciences ; Institute of Geology of the Czech Academy of Sciences ; Dutch Research Council (NWO VIDI project) ; Dutch Research Council (NWO VIDI project) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Swiss National Science Foundation ; Swiss National Science Foundation ; European Research Council (FP7) ERC-2013-SyG ; European Research Council (FP7) ERC-2013-SyG ; Europlanet ; Europlanet ; European Union's Horizon 2020 research and innovation programme ; European Union's Horizon 2020 research and innovation programme ; National Aeronautics and Space Administration ; National Aeronautics and Space Administration ; NASA ; NASA ; NASA's Planetary Defense Coordination Office ; NASA's Planetary Defense Coordination Office ; NASA SSERVI Center for Asteroid and Lunar Surface Science (CLASS) ; NASA SSERVI Center for Asteroid and Lunar Surface Science (CLASS) ; Simons Foundation (SCOL award) ; Simons Foundation (SCOL award) ; NASA Astrobiology Institute ; NASA Astrobiology Institute ; NASA Goddard Center for Astrobiology ; NASA Goddard Center for Astrobiology ; NASA Emerging Worlds Program ; NASA Emerging Worlds Program ; Hayabusa2 Program ; Hayabusa2 Program ; NASA NEOO program ; NASA NEOO program ; NASA SSO program ; NASA SSO program ; Botswana Geoscience Institute ; Botswana Geoscience Institute ; Department of National Museum & Monuments in Botswana ; Department of National Museum & Monuments in Botswana ; ARC LIEF grant from the Australian Research Council ; ARC LIEF grant from the Australian Research Council ; Academy of Finland ; Academy of Finland ; Institute of Geology of the Czech Academy of Sciences ; Institute of Geology of the Czech Academy of Sciences ; Dutch Research Council (NWO VIDI project) ; Dutch Research Council (NWO VIDI project) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Swiss National Science Foundation ; Swiss National Science Foundation ; European Research Council (FP7) ERC-2013-SyG ; European Research Council (FP7) ERC-2013-SyG ; Europlanet ; Europlanet ; European Union's Horizon 2020 research and innovation programme ; European Union's Horizon 2020 research and innovation programme ; National Aeronautics and Space Administration ; National Aeronautics and Space Administration ; NASA ; NASA ; NASA's Planetary Defense Coordination Office ; NASA's Planetary Defense Coordination Office ; NASA SSERVI Center for Asteroid and Lunar Surface Science (CLASS) ; NASA SSERVI Center for Asteroid and Lunar Surface Science (CLASS) ; Simons Foundation (SCOL award) ; Simons Foundation (SCOL award) ; NASA Astrobiology Institute ; NASA Astrobiology Institute ; NASA Goddard Center for Astrobiology ; NASA Goddard Center for Astrobiology ; NASA Emerging Worlds Program ; NASA Emerging Worlds Program ; Hayabusa2 Program ; Hayabusa2 Program ; NASA NEOO program ; NASA NEOO program ; NASA SSO program ; NASA SSO program ; Botswana Geoscience Institute ; Botswana Geoscience Institute ; Department of National Museum & Monuments in Botswana ; Department of National Museum & Monuments in Botswana ; ARC LIEF grant from the Australian Research Council ; ARC LIEF grant from the Australian Research Council ; Academy of Finland ; Academy of Finland ; Institute of Geology of the Czech Academy of Sciences ; Institute of Geology of the Czech Academy of Sciences ; Dutch Research Council (NWO VIDI project) ; Dutch Research Council (NWO VIDI project) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Swiss National Science Foundation ; Swiss National Science Foundation ; European Research Council (FP7) ERC-2013-SyG ; European Research Council (FP7) ERC-2013-SyG ; Europlanet ; Europlanet ; European Union's Horizon 2020 research and innovation programme ; European Union's Horizon 2020 research and innovation programme ; National Aeronautics and Space Administration ; National Aeronautics and Space Administration ; NASA ; NASA ; NASA's Planetary Defense Coordination Office ; NASA's Planetary Defense Coordination Office ; NASA SSERVI Center for Asteroid and Lunar Surface Science (CLASS) ; NASA SSERVI Center for Asteroid and Lunar Surface Science (CLASS) ; Simons Foundation (SCOL award) ; Simons Foundation (SCOL award) ; NASA Astrobiology Institute ; NASA Astrobiology Institute ; NASA Goddard Center for Astrobiology ; NASA Goddard Center for Astrobiology ; NASA Emerging Worlds Program ; NASA Emerging Worlds Program ; Hayabusa2 Program ; Hayabusa2 Program ; NASA NEOO program ; NASA NEOO program ; NASA SSO program ; NASA SSO program ; Botswana Geoscience Institute ; Botswana Geoscience Institute ; Department of National Museum & Monuments in Botswana ; Department of National Museum & Monuments in Botswana ; ARC LIEF grant from the Australian Research Council ; ARC LIEF grant from the Australian Research Council ; Academy of Finland ; Academy of Finland ; Institute of Geology of the Czech Academy of Sciences ; Institute of Geology of the Czech Academy of Sciences ; Dutch Research Council (NWO VIDI project) ; Dutch Research Council (NWO VIDI project) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Swiss National Science Foundation ; Swiss National Science Foundation ; European Research Council (FP7) ERC-2013-SyG ; European Research Council (FP7) ERC-2013-SyG ; Europlanet ; Europlanet ; European Union's Horizon 2020 research and innovation programme ; European Union's Horizon 2020 research and innovation programme ; National Aeronautics and Space Administration ; National Aeronautics and Space Administration ; NASA ; NASA ; NASA's Planetary Defense Coordination Office ; NASA's Planetary Defense Coordination Office ; NASA SSERVI Center for Asteroid and Lunar Surface Science (CLASS) ; NASA SSERVI Center for Asteroid and Lunar Surface Science (CLASS) ; Simons Foundation (SCOL award) ; Simons Foundation (SCOL award) ; NASA Astrobiology Institute ; NASA Astrobiology Institute ; NASA Goddard Center for Astrobiology ; NASA Goddard Center for Astrobiology ; NASA Emerging Worlds Program ; NASA Emerging Worlds Program ; Hayabusa2 Program ; Hayabusa2 Program ; NASA NEOO program ; NASA NEOO program ; NASA SSO program ; NASA SSO program
源URL[http://ir.iggcas.ac.cn/handle/132A11/101153]  
专题地质与地球物理研究所_岩石圈演化国家重点实验室
通讯作者Jenniskens, Peter
作者单位1.Univ Helsinki, Dept Geosci & Geog, POB 64, FI-00014 Helsinki, Finland
2.Botswana Natl Museum, 161 Queens Rd, Gaborone, Botswana
3.Lulea Univ Technol, Asteroid Engn Lab, Onboard Space Syst, Box 848, S-98128 Kiruna, Sweden
4.Univ Toulouse UPS, Univ Toulouse, CNRS, IRAP,CNES, F-31028 Toulouse 4, France
5.Tech Univ Munich, Analyt Food Chem, D-85354 Freising Weihenstephan, Germany
6.Helmholtz Zentrum Munchen, Res Unit Analyt BioGeoChem, Ingolstadter Landstr 1, D-85764 Neuherberg, Germany
7.NASA, Goddard Space Flight Ctr, 8800 Greenbelt Rd, Greenbelt, MD 20771 USA
8.Catholic Univ Amer, Dept Chem, 620 Michigan Ave N-E, Washington, DC 20064 USA
9.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
10.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
推荐引用方式
GB/T 7714		 Jenniskens, Peter,Gabadirwe, Mohutsiwa,Yin, Qing-Zhu,et al. The impact and recovery of asteroid 2018 LA[J]. METEORITICS & PLANETARY SCIENCE,2021:50.
APA Jenniskens, Peter.,Gabadirwe, Mohutsiwa.,Yin, Qing-Zhu.,Proyer, Alexander.,Moses, Oliver.,...&Botepe, Koketso.(2021).The impact and recovery of asteroid 2018 LA.METEORITICS & PLANETARY SCIENCE,50.
MLA Jenniskens, Peter,et al."The impact and recovery of asteroid 2018 LA".METEORITICS & PLANETARY SCIENCE (2021):50.

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来源：地质与地球物理研究所

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