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Characterization of the MASCOT landing area by Hayabusa2

Schröder, Stefanus (författare)
Luleå tekniska universitet,Rymdteknik
Sakatani, Naoya (författare)
Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara, Kanagawa 252-5210, Japan
Honda, Rie (författare)
Center for Data Science, Ehime University, Matsuyama, Ehime 790–8577, Japan
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Tatsumi, Eri (författare)
Instituto de Astrofísica de Canarias, University of La Laguna, 38205 La Laguna, Tenerife, Spain
Yokota, Yasuhiro (författare)
Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara, Kanagawa 252-5210, Japan; Kochi University, Kochi 780-8520, Japan
Domingue, Deborah (författare)
Planetary Science Institute, Tucson, AZ 85719-2395, USA
Cho, Yuichiro (författare)
University of Tokyo, Bunkyo, Tokyo 113-0033, Japan
Kameda, Shingo (författare)
Rikkyo University, Toshima, Tokyo 171-8501, Japan
Kitazato, Kohei (författare)
University of Aizu, Fukushima 965-8580, Japan
Kouyama, Toru (författare)
National Institute of Advanced Industrial Science and Technology, Koto, Tokyo 135-0064, Japan
Matsuoka, Moe (författare)
National Institute of Advanced Industrial Science and Technology, Tsukuba, Ibaraki 305-8567, Japan
Miura, Akira (författare)
Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara, Kanagawa 252-5210, Japan
Morota, Tomokatsu (författare)
University of Tokyo, Bunkyo, Tokyo 113-0033, Japan
Okada, Tatsuaki (författare)
Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara, Kanagawa 252-5210, Japan; University of Tokyo, Bunkyo, Tokyo 113-0033, Japan
Sawada, Hirotaka (författare)
Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara, Kanagawa 252-5210, Japan
Senshu, Hiroki (författare)
Planetary Exploration Research Center, Chiba Institute of Technology, Narashino, Chiba 275-0016, Japan
Shimaki, Yuri (författare)
Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara, Kanagawa 252-5210, Japan
Sugita, Seiji (författare)
University of Tokyo, Bunkyo, Tokyo 113-0033, Japan
Tanaka, Satoshi (författare)
Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara, Kanagawa 252-5210, Japan; Graduate University for Advanced Studies, SOKENDAI, Hayama, Kanagawa 240-0193, Japan; University of Tokyo, Kashiwa, Chiba 277-8561, Japan
Yabuta, Hikaru (författare)
Hiroshima University, 739-8526 Hiroshima, Japan
Yamada, Manabu (författare)
Planetary Exploration Research Center, Chiba Institute of Technology, Narashino, Chiba 275-0016, Japan
Grott, Matthias (författare)
Institute of Planetary Research, German Aerospace Center (DLR), 12489 Berlin, Germany
Hamm, Maximilian (författare)
Institute of Planetary Research, German Aerospace Center (DLR), 12489 Berlin, Germany; University of Potsdam, 14469 Potsdam, Germany
Ho, Tra-Mi (författare)
Institute of Space Systems, German Aerospace Center (DLR), 28359 Bremen, Germany
Jaumann, Ralf (författare)
Institute of Geological Sciences, Free University of Berlin, 12249 Berlin, Germany
Mottola, Stefano (författare)
Institute of Planetary Research, German Aerospace Center (DLR), 12489 Berlin, Germany
Otto, Katharina (författare)
Institute of Planetary Research, German Aerospace Center (DLR), 12489 Berlin, Germany
Schmitz, Nicole (författare)
Institute of Planetary Research, German Aerospace Center (DLR), 12489 Berlin, Germany
Scholten, Frank (författare)
Institute of Planetary Research, German Aerospace Center (DLR), 12489 Berlin, Germany
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 (creator_code:org_t)
2022-10-21
2022
Engelska.
Ingår i: Astronomy and Astrophysics. - : EDP Sciences. - 0004-6361 .- 1432-0746. ; 666
  • Tidskriftsartikel (refereegranskat)
Abstract Ämnesord
Stäng  
  • Context. After landing on C-type asteroid Ryugu, MASCOT imaged brightly colored, submillimeter-sized inclusions in a small rock. Hayabusa2 successfully returned a sample of small particles from the surface of Ryugu, but none of these appear to harbor such inclusions. The samples are considered representative of Ryugu.Aims. To understand the apparent discrepancy between MASCOT observations and Ryugu samples, we assess whether the MASCOT landing site, and the rock by implication, is perhaps atypical for Ryugu.Methods. We analyzed observations of the MASCOT landing area acquired by three instruments on board Hayabusa2: a camera (ONC), a nearinfrared spectrometer (NIRS3), and a thermal infrared imager (TIR). We compared the landing area properties thus retrieved with those of theaverage Ryugu surface.Results. We selected several areas and landforms in the landing area for analysis: a small crater, a collection of smooth rocks, and the landing site itself. The crater is relatively blue and the rocks are relatively red. The spectral and thermophysical properties of the landing site are very closeto those of the average Ryugu surface. The spectral properties of the MASCOT rock are probably close to average, but its thermal inertia may besomewhat higher.Conclusions. The MASCOT rock can also be considered representative of Ryugu. Some of the submillimeter-sized particles in the returned samples stand out because of their atypical spectral properties. Such particles may be present as inclusions in the MASCOT rock.

Ämnesord

NATURVETENSKAP  -- Geovetenskap och miljövetenskap -- Geologi (hsv//swe)
NATURAL SCIENCES  -- Earth and Related Environmental Sciences -- Geology (hsv//eng)
NATURVETENSKAP  -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
NATURAL SCIENCES  -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)

Nyckelord

minor planets
asteroids: individual: Ryugu
methods: data analysis
Atmosfärsvetenskap
Atmospheric science

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