The impact and recovery of asteroid 2018 LA

Peter Jenniskens; Mohutsiwa Gabadirwe; Qing Zhu Yin; Alexander Proyer; Oliver Moses; Tomas Kohout; Fulvio Franchi; Roger L. Gibson; Richard Kowalski; Eric J. Christensen; Alex R. Gibbs; Aren Heinze; Larry Denneau; Davide Farnocchia; Paul W. Chodas; William Gray; Marco Micheli; Nick Moskovitz; Christopher A. Onken; Christian Wolf; Hadrien A.R. Devillepoix; Quanzhi Ye; Darrel K. Robertson; Peter Brown; Esko Lyytinen; Jarmo Moilanen; Jim Albers; Tim Cooper; Jelle Assink; Läslo Evers; Panu Lahtinen; Lesedi Seitshiro; Matthias Laubenstein; Nggie Wantlo; Phemo Moleje; Joseph Maritinkole; Heikki Suhonen; Michael E. Zolensky; Lewis Ashwal; Takahiro Hiroi; Derek W. Sears; Alexander Sehlke; Alessandro Maturilli; Matthew E. Sanborn; Magdalena H. Huyskens; Supratim Dey; Karen Ziegler; Henner Busemann; My E.I. Riebe; Matthias M.M. Meier; Kees C. Welten; Marc W. Caffee; Qin Zhou; Qiu Li Li; Xian Hua Li; Yu Liu; Guo Qiang Tang; Hannah L. McLain; Jason P. Dworkin; Daniel P. Glavin; Philippe Schmitt-Kopplin; Hassan Sabbah; Christine Joblin; Mikael Granvik; Babutsi Mosarwa; Koketso Botepe

doi:10.1111/maps.13653

The impact and recovery of asteroid 2018 LA

Peter Jenniskens
, Mohutsiwa Gabadirwe
, Qing Zhu Yin
, Alexander Proyer
, Oliver Moses
, Tomas Kohout
, Fulvio Franchi
, Roger L. Gibson
, Richard Kowalski
, Eric J. Christensen
, Alex R. Gibbs
, Aren Heinze
, Larry Denneau
, Davide Farnocchia
, Paul W. Chodas
, William Gray
, Marco Micheli
, Nick Moskovitz
, Christopher A. Onken
, Christian Wolf

Hadrien A.R. Devillepoix, Quanzhi Ye, Darrel K. Robertson, Peter Brown, Esko Lyytinen, Jarmo Moilanen, Jim Albers, Tim Cooper, Jelle Assink, Läslo Evers, Panu Lahtinen, Lesedi Seitshiro, Matthias Laubenstein, Nggie Wantlo, Phemo Moleje, Joseph Maritinkole, Heikki Suhonen, Michael E. Zolensky, Lewis Ashwal, Takahiro Hiroi, Derek W. Sears, Alexander Sehlke, Alessandro Maturilli, Matthew E. Sanborn, Magdalena H. Huyskens, Supratim Dey, Karen Ziegler, Henner Busemann, My E.I. Riebe, Matthias M.M. Meier, Kees C. Welten, Marc W. Caffee, Qin Zhou, Qiu Li Li, Xian Hua Li, Yu Liu, Guo Qiang Tang, Hannah L. McLain, Jason P. Dworkin, Daniel P. Glavin, Philippe Schmitt-Kopplin, Hassan Sabbah, Christine Joblin, Mikael Granvik, Babutsi Mosarwa, Koketso Botepe

Chair of Analytical Food Chemistry

The SETI Institute
NASA Ames Research Center
Botswana Geoscience Institute
University of California, Davis
Botswana International University of Science and Technology
University of Botswana
University of Helsinki
Ursa Finnish Fireball Network
University of the Witwatersrand, Johannesburg
University of Arizona
University of Hawaii
Jet Propulsion Laboratory
Project Pluto
European Space Agency (ESA)
Lowell Observatory
Australian Natl Univ
Curtin University
University of Maryland
California Institute of Technology
Western University
Astronomical Society of Southern Africa
Royal Netherlands Meteorological Institute
Department of Geoscience and Engineering, Faculty of Civil Engineering and Geosciences, Delft University of Technology
Laboratori Nazionali del Gran Sasso
SN4 NASA-Johnson Space Center
Brown University
Deutsches Zentrum für Luft- und Raumfahrt (DLR)
University of New Mexico
ETH Zurich
Naturmuseum St. Gallen
Space Sciences Laboratory at UC Berkeley
Purdue University
National Astronomical Observatories Chinese Academy of Sciences
Chinese Academy of Sciences
Catholic University of America
NASA Goddard Space Flight Center
Helmholtz Zentrum München German Research Center for Environmental Health
UPS)
Luleå University of Technology
Botswana National Museum

Research output: Contribution to journal › Article › peer-review

48 Scopus citations

Abstract

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 p_V ~ 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.

Original language	English
Pages (from-to)	844-893
Number of pages	50
Journal	Meteoritics and Planetary Science
Volume	56
Issue number	4
DOIs	https://doi.org/10.1111/maps.13653
State	Published - Apr 2021

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Jenniskens, P., Gabadirwe, M., Yin, Q. Z., Proyer, A., Moses, O., Kohout, T., Franchi, F., Gibson, R. L., Kowalski, R., Christensen, E. J., Gibbs, A. R., Heinze, A., Denneau, L., Farnocchia, D., Chodas, P. W., Gray, W., Micheli, M., Moskovitz, N., Onken, C. A., ... Botepe, K. (2021). The impact and recovery of asteroid 2018 LA. Meteoritics and Planetary Science, 56(4), 844-893. https://doi.org/10.1111/maps.13653

@article{6a437afb901a4b678033c6cbccc568b0,

title = "The impact and recovery of asteroid 2018 LA",

abstract = "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 \textasciitilde{}156 cm diameter with high bulk density \textasciitilde{}2.85 g cm−3, a relatively low albedo pV \textasciitilde{} 0.25, no significant opposition effect on the asteroid brightness, and an impact kinetic energy of \textasciitilde{}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.",

author = "Peter Jenniskens and Mohutsiwa Gabadirwe and Yin, \{Qing Zhu\} and Alexander Proyer and Oliver Moses and Tomas Kohout and Fulvio Franchi and Gibson, \{Roger L.\} and Richard Kowalski and Christensen, \{Eric J.\} and Gibbs, \{Alex R.\} and Aren Heinze and Larry Denneau and Davide Farnocchia and Chodas, \{Paul W.\} and William Gray and Marco Micheli and Nick Moskovitz and Onken, \{Christopher A.\} and Christian Wolf and Devillepoix, \{Hadrien A.R.\} and Quanzhi Ye and Robertson, \{Darrel K.\} and Peter Brown and Esko Lyytinen and Jarmo Moilanen and Jim Albers and Tim Cooper and Jelle Assink and L{\"a}slo Evers and Panu Lahtinen and Lesedi Seitshiro and Matthias Laubenstein and Nggie Wantlo and Phemo Moleje and Joseph Maritinkole and Heikki Suhonen and Zolensky, \{Michael E.\} and Lewis Ashwal and Takahiro Hiroi and Sears, \{Derek W.\} and Alexander Sehlke and Alessandro Maturilli and Sanborn, \{Matthew E.\} and Huyskens, \{Magdalena H.\} and Supratim Dey and Karen Ziegler and Henner Busemann and Riebe, \{My E.I.\} and Meier, \{Matthias M.M.\} and Welten, \{Kees C.\} and Caffee, \{Marc W.\} and Qin Zhou and Li, \{Qiu Li\} and Li, \{Xian Hua\} and Yu Liu and Tang, \{Guo Qiang\} and McLain, \{Hannah L.\} and Dworkin, \{Jason P.\} and Glavin, \{Daniel P.\} and Philippe Schmitt-Kopplin and Hassan Sabbah and Christine Joblin and Mikael Granvik and Babutsi Mosarwa and Koketso Botepe",

note = "Publisher Copyright: {\textcopyright} The Meteoritical Society, 2021.",

year = "2021",

month = apr,

doi = "10.1111/maps.13653",

language = "English",

volume = "56",

pages = "844--893",

journal = "Meteoritics and Planetary Science",

issn = "1086-9379",

publisher = "Wiley-Blackwell",

number = "4",

}

Jenniskens, P, Gabadirwe, M, Yin, QZ, Proyer, A, Moses, O, Kohout, T, Franchi, F, Gibson, RL, Kowalski, R, Christensen, EJ, Gibbs, AR, Heinze, A, Denneau, L, Farnocchia, D, Chodas, PW, Gray, W, Micheli, M, Moskovitz, N, Onken, CA, Wolf, C, Devillepoix, HAR, Ye, Q, Robertson, DK, Brown, P, Lyytinen, E, Moilanen, J, Albers, J, Cooper, T, Assink, J, Evers, L, Lahtinen, P, Seitshiro, L, Laubenstein, M, Wantlo, N, Moleje, P, Maritinkole, J, Suhonen, H, Zolensky, ME, Ashwal, L, Hiroi, T, Sears, DW, Sehlke, A, Maturilli, A, Sanborn, ME, Huyskens, MH, Dey, S, Ziegler, K, Busemann, H, Riebe, MEI, Meier, MMM, Welten, KC, Caffee, MW, Zhou, Q, Li, QL, Li, XH, Liu, Y, Tang, GQ, McLain, HL, Dworkin, JP, Glavin, DP, Schmitt-Kopplin, P, Sabbah, H, Joblin, C, Granvik, M, Mosarwa, B & Botepe, K 2021, 'The impact and recovery of asteroid 2018 LA', Meteoritics and Planetary Science, vol. 56, no. 4, pp. 844-893. https://doi.org/10.1111/maps.13653

TY - JOUR

T1 - The impact and recovery of asteroid 2018 LA

AU - Jenniskens, Peter

AU - Gabadirwe, Mohutsiwa

AU - Yin, Qing Zhu

AU - Proyer, Alexander

AU - Moses, Oliver

AU - Kohout, Tomas

AU - Franchi, Fulvio

AU - Gibson, Roger L.

AU - Kowalski, Richard

AU - Christensen, Eric J.

AU - Gibbs, Alex R.

AU - Heinze, Aren

AU - Denneau, Larry

AU - Farnocchia, Davide

AU - Chodas, Paul W.

AU - Gray, William

AU - Micheli, Marco

AU - Moskovitz, Nick

AU - Onken, Christopher A.

AU - Wolf, Christian

AU - Devillepoix, Hadrien A.R.

AU - Ye, Quanzhi

AU - Robertson, Darrel K.

AU - Brown, Peter

AU - Lyytinen, Esko

AU - Moilanen, Jarmo

AU - Albers, Jim

AU - Cooper, Tim

AU - Assink, Jelle

AU - Evers, Läslo

AU - Lahtinen, Panu

AU - Seitshiro, Lesedi

AU - Laubenstein, Matthias

AU - Wantlo, Nggie

AU - Moleje, Phemo

AU - Maritinkole, Joseph

AU - Suhonen, Heikki

AU - Zolensky, Michael E.

AU - Ashwal, Lewis

AU - Hiroi, Takahiro

AU - Sears, Derek W.

AU - Sehlke, Alexander

AU - Maturilli, Alessandro

AU - Sanborn, Matthew E.

AU - Huyskens, Magdalena H.

AU - Dey, Supratim

AU - Ziegler, Karen

AU - Busemann, Henner

AU - Riebe, My E.I.

AU - Meier, Matthias M.M.

AU - Welten, Kees C.

AU - Caffee, Marc W.

AU - Zhou, Qin

AU - Li, Qiu Li

AU - Li, Xian Hua

AU - Liu, Yu

AU - Tang, Guo Qiang

AU - McLain, Hannah L.

AU - Dworkin, Jason P.

AU - Glavin, Daniel P.

AU - Schmitt-Kopplin, Philippe

AU - Sabbah, Hassan

AU - Joblin, Christine

AU - Granvik, Mikael

AU - Mosarwa, Babutsi

AU - Botepe, Koketso

PY - 2021/4

Y1 - 2021/4

N2 - 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.

AB - 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.

UR - https://www.scopus.com/pages/publications/85104768997

U2 - 10.1111/maps.13653

DO - 10.1111/maps.13653

M3 - Article

AN - SCOPUS:85104768997

SN - 1086-9379

VL - 56

SP - 844

EP - 893

JO - Meteoritics and Planetary Science

JF - Meteoritics and Planetary Science

IS - 4

ER -

The impact and recovery of asteroid 2018 LA

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