Progress in Earth and Planetary Science (Dec 2018)
Asteroid Ryugu before the Hayabusa2 encounter
- Koji Wada,
- Matthias Grott,
- Patrick Michel,
- Kevin J. Walsh,
- Antonella M. Barucci,
- Jens Biele,
- Jürgen Blum,
- Carolyn M. Ernst,
- Jan Thimo Grundmann,
- Bastian Gundlach,
- Axel Hagermann,
- Maximilian Hamm,
- Martin Jutzi,
- Myung-Jin Kim,
- Ekkehard Kührt,
- Lucille Le Corre,
- Guy Libourel,
- Roy Lichtenheldt,
- Alessandro Maturilli,
- Scott R. Messenger,
- Tatsuhiro Michikami,
- Hideaki Miyamoto,
- Stefano Mottola,
- Thomas Müller,
- Akiko M. Nakamura,
- Larry R. Nittler,
- Kazunori Ogawa,
- Tatsuaki Okada,
- Ernesto Palomba,
- Naoya Sakatani,
- Stefan E. Schröder,
- Hiroki Senshu,
- Driss Takir,
- Michael E. Zolensky,
- International Regolith Science Group (IRSG) in Hayabusa2 project
Affiliations
- Koji Wada
- Planetary Exploration Research Center, Chiba Institute of Technology
- Matthias Grott
- DLR Institute of Planetary Research
- Patrick Michel
- Université Côte d’Azur, Observatoire de la Côte d’Azur, CNRS, Laboratoire Lagrange, CS 34229
- Kevin J. Walsh
- Southwest Research Institute
- Antonella M. Barucci
- Laboratoire d’Etudes Spatiales et d’Instrumentation en Astrophysique (LESIA), Observatoire de Paris, PSL Research University, CNRS, Université Paris Diderot, Sorbonne Paris Cité, UPMC Université Paris 06, Sorbonne Universités
- Jens Biele
- DLR RB-MSC German Aerospace Center
- Jürgen Blum
- Institut für Geophysik und extraterrestrische Physik, Technische Universität Braunschweig
- Carolyn M. Ernst
- Johns Hopkins University Applied Physics Laboratory
- Jan Thimo Grundmann
- DLR German Aerospace Center, Institute of Space Systems, System Engineering and Project Office
- Bastian Gundlach
- Institut für Geophysik und extraterrestrische Physik, Technische Universität Braunschweig
- Axel Hagermann
- Department of Biological and Environmental Sciences, University of Stirling
- Maximilian Hamm
- DLR Institute of Planetary Research
- Martin Jutzi
- Physics Institute, University of Bern
- Myung-Jin Kim
- Center for Space Situational Awareness, Korea Astronomy and Space Science Institute
- Ekkehard Kührt
- DLR Institute of Planetary Research
- Lucille Le Corre
- Planetary Science Institute
- Guy Libourel
- Université Côte d’Azur, Observatoire de la Côte d’Azur, CNRS, Laboratoire Lagrange, CS 34229
- Roy Lichtenheldt
- DLR Institute of System Dynamics and Control
- Alessandro Maturilli
- DLR Institute of Planetary Research
- Scott R. Messenger
- Robert M Walker for Space Sciences, Astromaterials Research and Exploration Science, NASA Johnson Space Center
- Tatsuhiro Michikami
- Faculty of Engineering, Kindai University
- Hideaki Miyamoto
- Department of Systems Innovation, University of Tokyo
- Stefano Mottola
- DLR Institute of Planetary Research
- Thomas Müller
- Max-Planck Institute for Extraterrestrial Physics
- Akiko M. Nakamura
- Department of Planetology, Graduate School of Science, Kobe University
- Larry R. Nittler
- Department of Terrestrial Magnetism, Carnegie Institution of Washington
- Kazunori Ogawa
- Department of Planetology, Graduate School of Science, Kobe University
- Tatsuaki Okada
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency
- Ernesto Palomba
- INAF, Istituto di Astrofisica e Planetologia Spaziali
- Naoya Sakatani
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency
- Stefan E. Schröder
- DLR Institute of Planetary Research
- Hiroki Senshu
- Planetary Exploration Research Center, Chiba Institute of Technology
- Driss Takir
- JETS/Astromaterials Research and Exploration Science, NASA Johnson Space Center
- Michael E. Zolensky
- Robert M Walker for Space Sciences, Astromaterials Research and Exploration Science, NASA Johnson Space Center
- International Regolith Science Group (IRSG) in Hayabusa2 project
- DOI
- https://doi.org/10.1186/s40645-018-0237-y
- Journal volume & issue
-
Vol. 5,
no. 1
pp. 1 – 30
Abstract
Abstract Asteroid (162173) Ryugu is the target object of Hayabusa2, an asteroid exploration and sample return mission led by Japan Aerospace Exploration Agency (JAXA). Ground-based observations indicate that Ryugu is a C-type near-Earth asteroid with a diameter of less than 1 km, but the knowledge of its detailed properties is very limited prior to Hayabusa2 observation. This paper summarizes our best understanding of the physical and dynamical properties of Ryugu based on ground-based remote sensing and theoretical modeling before the Hayabusa2’s arrival at the asteroid. This information is used to construct a design reference model of the asteroid that is used for the formulation of mission operation plans in advance of asteroid arrival. Particular attention is given to the surface properties of Ryugu that are relevant to sample acquisition. This reference model helps readers to appropriately interpret the data that will be directly obtained by Hayabusa2 and promotes scientific studies not only for Ryugu itself and other small bodies but also for the solar system evolution that small bodies shed light on.
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