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The geology and evolution of the Near-Earth binary asteroid system (65803) Didymos

Author

Listed:
  • Olivier Barnouin

    (Johns Hopkins University Applied Physics Laboratory)

  • Ronald-Louis Ballouz

    (Johns Hopkins University Applied Physics Laboratory)

  • Simone Marchi

    (Southwest Research Institute)

  • Jean-Baptiste Vincent

    (DLR Institute of Planetary Research)

  • Harrison Agrusa

    (Laboratory Lagrange
    University of Maryland)

  • Yun Zhang

    (University of Michigan)

  • Carolyn M. Ernst

    (Johns Hopkins University Applied Physics Laboratory)

  • Maurizio Pajola

    (INAF-Astronomical Observatory of Padova)

  • Filippo Tusberti

    (INAF-Astronomical Observatory of Padova)

  • Alice Lucchetti

    (INAF-Astronomical Observatory of Padova)

  • R. Terik Daly

    (Johns Hopkins University Applied Physics Laboratory)

  • Eric Palmer

    (Planetary Science Institute)

  • Kevin J. Walsh

    (Southwest Research Institute)

  • Patrick Michel

    (Laboratory Lagrange
    School of Engineering)

  • Jessica M. Sunshine

    (University of Maryland)

  • Juan L. Rizos

    (CSIC)

  • Tony L. Farnham

    (University of Maryland)

  • Derek C. Richardson

    (University of Maryland)

  • Laura M. Parro

    (University of Alicante)

  • Naomi Murdoch

    (University of Toulouse)

  • Colas Q. Robin

    (University of Toulouse)

  • Masatoshi Hirabayashi

    (Georgia Institute of Technology)

  • Tomas Kahout

    (Univ. of Helsinki)

  • Erik Asphaug

    (University of Arizona)

  • Sabina D. Raducan

    (Univ. of Bern)

  • Martin Jutzi

    (Univ. of Bern)

  • Fabio Ferrari

    (Politechnic University of Milan)

  • Pedro Henrique Aragao Hasselmann

    (INAF- Astronomical Observatory of Rome)

  • Adriano CampoBagatin

    (University of Alicante)

  • Nancy L. Chabot

    (Johns Hopkins University Applied Physics Laboratory)

  • Jian-Yang Li

    (Planetary Science Institute)

  • Andrew F. Cheng

    (Johns Hopkins University Applied Physics Laboratory)

  • Michael C. Nolan

    (University of Arizona)

  • Angela M. Stickle

    (Johns Hopkins University Applied Physics Laboratory)

  • Ozgur Karatekin

    (Royal Observatory of Belgium)

  • Elisabetta Dotto

    (INAF- Astronomical Observatory of Rome)

  • Vincenzo Corte

    (INAF-Institue of Space Astrophysics and Planetology)

  • Elena Mazzotta Epifani

    (INAF- Astronomical Observatory of Rome)

  • Alessandro Rossi

    (CNR)

  • Igor Gai

    (University of Bologna)

  • Jasinghege Don Prasanna Deshapriya

    (INAF- Astronomical Observatory of Rome)

  • Ivano Bertini

    (University of Parthenope)

  • Angelo Zinzi

    (ASI)

  • Josep M. Trigo-Rodriguez

    (Institute of Space Sciences (CSIC-IEEC))

  • Joel Beccarelli

    (Univ. of Padova)

  • Stavro Lambrov Ivanovski

    (INAF- Astronomical Observatory of Trieste)

  • John Robert Brucato

    (INAF- Astronomical Observatory of Arcetri)

  • Giovanni Poggiali

    (INAF- Astronomical Observatory of Arcetri)

  • Giovanni Zanotti

    (Univ. of Bern)

  • Marilena Amoroso

    (ASI)

  • Andrea Capannolo

    (Politechnic University of Milan)

  • Gabriele Cremonese

    (INAF-Astronomical Observatory of Padova)

  • Massimo Dall’Ora

    (INAF- Astronomical Observatory of Capodimonte)

  • Simone Ieva

    (INAF- Astronomical Observatory of Rome)

  • Gabriele Impresario

    (ASI)

  • Michèle Lavagn

    (Politechnic University of Milan)

  • Dario Modenini

    (University of Bologna)

  • Pasquale Palumbo

    (University of Parthenope)

  • Davide Perna

    (INAF- Astronomical Observatory of Rome)

  • Simone Pirrotta

    (ASI)

  • Paolo Tortora

    (University of Bologna)

  • Marco Zannoni

    (University of Bologna)

  • Andrew S. Rivkin

    (Johns Hopkins University Applied Physics Laboratory)

Abstract

Images collected during NASA’s Double Asteroid Redirection Test (DART) mission provide the first resolved views of the Didymos binary asteroid system. These images reveal that the primary asteroid, Didymos, is flattened and has plausible undulations along its equatorial perimeter. At high elevations, its surface is rough and contains large boulders and craters; at low elevations its surface is smooth and possesses fewer large boulders and craters. Didymos’ moon, Dimorphos, possesses an intimate mixture of boulders, several asteroid-wide lineaments, and a handful of craters. The surfaces of both asteroids include boulders that are large relative to their host body, suggesting that both asteroids are rubble piles. Based on these observations, our models indicate that Didymos has a surface cohesion ≤ 1 Pa and an interior cohesion of ∼10 Pa, while Dimorphos has a surface cohesion of

Suggested Citation

  • Olivier Barnouin & Ronald-Louis Ballouz & Simone Marchi & Jean-Baptiste Vincent & Harrison Agrusa & Yun Zhang & Carolyn M. Ernst & Maurizio Pajola & Filippo Tusberti & Alice Lucchetti & R. Terik Daly , 2024. "The geology and evolution of the Near-Earth binary asteroid system (65803) Didymos," Nature Communications, Nature, vol. 15(1), pages 1-14, December.
    • Handle: RePEc:nat:natcom:v:15:y:2024:i:1:d:10.1038_s41467-024-50146-x
    DOI: 10.1038/s41467-024-50146-x
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    References listed on IDEAS

    as
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