^1,2Du, K.,^1,3Li, S.,⁴Leya, I.,^4,5Smith, T.,⁶Zhang, D.,⁷Wang, P.
Advances in Space research (in Press) Link to Article [DOI: 10.1016/j.asr.2021.02.020]
¹Center for Lunar and Planetary Sciences, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, 550081, China
²University of Chinese Academy of Sciences, Beijing, 100049, China
³Chinese Academy of Sciences Center for Excellence in Comparative Planetology, Hefei, 230026, China
⁴Physics Institute, University of Bern, Bern, CH-3012, Switzerland
⁵State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, 100029, China
⁶Key Laboratory of Metallogenic Prediction of Nonferrous Metals, Ministry of Education, School of Geosciences and Info-physics, Central South University, Changsha, 410083, China
⁷Division of Mines and Geology, Sixth Geological Brigade, Hami, 839000, China

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¹Williams, N.H.,^2,3Fehr, M.A.,^2,4Parkinson, I.J.,³Mandl, M.B.,^1,3Schönbächler, M.
Chemical Geology 568, 120009 Link to Article [DOI: 10.1016/j.chemgeo.2020.120009]
¹The University of Manchester, School of Earth, Atmospheric and Environmental Sciences, Manchester, M139PL, United Kingdom
²The Open University, School of Environment, Earth and Ecosystem Sciences, Milton Keynes, MK7 6AA, United Kingdom
³ETH Zürich, Institute of Geochemistry and Petrology, Zürich, 8092, Switzerland
⁴University of Bristol, School of Earth Sciences, Bristol, BS8 1RJ, United Kingdom

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^1,2Peter Jenniskens et al. (>10)
Meteoritics & Planetary Science (in Press) Link to Article [https://doi.org/10.1111/maps.13653]
¹SETI Institute, 189 Bernardo Avenue, Mountain View, California, 94043 USA
²NASA Ames Research Center, Moffett Field, California, 94035 USA
Published by arrangement with John Wiley & Sons

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 ~156 cm diameter with high bulk density ~2.85 g cm−3, a relatively low albedo pV ~ 0.25, no significant opposition effect on the asteroid brightness, and an impact kinetic energy of ~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 ν6 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 207Pb/206Pb 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.