The geomorphology, color, and thermal properties of Ryugu: Implications for parent-body processes

S. Sugita; R. Honda; T. Morota; S. Kameda; H. Sawada; E. Tatsumi; M. Yamada; C. Honda; Y. Yokota; T. Kouyama; N. Sakatani; K. Ogawa; H. Suzuki; T. Okada; N. Namiki; S. Tanaka; Y. Iijima; K. Yoshioka; M. Hayakawa; Y. Cho; M. Matsuoka; N. Hirata; N. Hirata; H. Miyamoto; D. Domingue; M. Hirabayashi; T. Nakamura; T. Hiroi; T. Michikami; P. Michel; R. L. Ballouz; O. S. Barnouin; C. M. Ernst; S. E. Schröder; H. Kikuchi; R. Hemmi; G. Komatsu; T. Fukuhara; M. Taguchi; T. Arai; H. Senshu; H. Demura; Y. Ogawa; Y. Shimaki; T. Sekiguchi; T. G. Müller; A. Hagermann; T. Mizuno; H. Noda; K. Matsumoto; R. Yamada; Y. Ishihara; H. Ikeda; H. Araki; K. Yamamoto; S. Abe; F. Yoshida; A. Higuchi; S. Sasaki; S. Oshigami; S. Tsuruta; K. Asari; S. Tazawa; M. Shizugami; J. Kimura; T. Otsubo; H. Yabuta; S. Hasegawa; M. Ishiguro; S. Tachibana; E. Palmer; R. Gaskell; L. Le Corre; R. Jaumann; K. Otto; N. Schmitz; P. A. Abell; M. A. Barucci; M. E. Zolensky; F. Vilas; F. Thuillet; C. Sugimoto; N. Takaki; Y. Suzuki; H. Kamiyoshihara; M. Okada; K. Nagata; M. Fujimoto; M. Yoshikawa; Y. Yamamoto; K. Shirai; R. Noguchi; N. Ogawa; F. Terui; S. Kikuchi; T. Yamaguchi; Y. Oki; Y. Takao; H. Takeuchi; G. Ono; Y. Mimasu; K. Yoshikawa; T. Takahashi; Y. Takei; A. Fujii; C. Hirose; S. Nakazawa; S. Hosoda; O. Mori; T. Shimada; S. Soldini; T. Iwata; M. Abe; H. Yano; R. Tsukizaki; M. Ozaki; K. Nishiyama; T. Saiki; S. Watanabe; Y. Tsuda

doi:10.1126/science.aaw0422

The geomorphology, color, and thermal properties of Ryugu: Implications for parent-body processes

S. Sugita, R. Honda, T. Morota, S. Kameda, H. Sawada, E. Tatsumi, M. Yamada, C. Honda, Y. Yokota, T. Kouyama, N. Sakatani, K. Ogawa, H. Suzuki, T. Okada, N. Namiki, S. Tanaka, Y. Iijima, K. Yoshioka, M. Hayakawa, Y. ChoM. Matsuoka, N. Hirata, N. Hirata, H. Miyamoto, D. Domingue, M. Hirabayashi, T. Nakamura, T. Hiroi, T. Michikami, P. Michel, R. L. Ballouz, O. S. Barnouin, C. M. Ernst, S. E. Schröder, H. Kikuchi, R. Hemmi, G. Komatsu, T. Fukuhara, M. Taguchi, T. Arai, H. Senshu, H. Demura, Y. Ogawa, Y. Shimaki, T. Sekiguchi, T. G. Müller, A. Hagermann, T. Mizuno, H. Noda, K. Matsumoto, R. Yamada, Y. Ishihara, H. Ikeda, H. Araki, K. Yamamoto, S. Abe, F. Yoshida, A. Higuchi, S. Sasaki, S. Oshigami, S. Tsuruta, K. Asari, S. Tazawa, M. Shizugami, J. Kimura, T. Otsubo, H. Yabuta, S. Hasegawa, M. Ishiguro, S. Tachibana, E. Palmer, R. Gaskell, L. Le Corre, R. Jaumann, K. Otto, N. Schmitz, P. A. Abell, M. A. Barucci, M. E. Zolensky, F. Vilas, F. Thuillet, C. Sugimoto, N. Takaki, Y. Suzuki, H. Kamiyoshihara, M. Okada, K. Nagata, M. Fujimoto, M. Yoshikawa, Y. Yamamoto, K. Shirai, R. Noguchi, N. Ogawa, F. Terui, S. Kikuchi, T. Yamaguchi, Y. Oki, Y. Takao, H. Takeuchi, G. Ono, Y. Mimasu, K. Yoshikawa, T. Takahashi, Y. Takei, A. Fujii, C. Hirose, S. Nakazawa, S. Hosoda, O. Mori, T. Shimada, S. Soldini, T. Iwata, M. Abe, H. Yano, R. Tsukizaki, M. Ozaki, K. Nishiyama, T. Saiki, S. Watanabe, Y. Tsuda

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Abstract

The near-Earth carbonaceous asteroid 162173 Ryugu is thought to have been produced from a parent body that contained water ice and organic molecules. The Hayabusa2 spacecraft has obtained global multicolor images of Ryugu. Geomorphological features present include a circum-equatorial ridge, east-west dichotomy, high boulder abundances across the entire surface, and impact craters. Age estimates from the craters indicate a resurfacing age of ≤ 106 years for the top 1-meter layer. Ryugu is among the darkest known bodies in the Solar System. The high abundance and spectral properties of boulders are consistent with moderately dehydrated materials, analogous to thermally metamorphosed meteorites found on Earth. The general uniformity in color across Ryugu's surface supports partial dehydration due to internal heating of the asteroid's parent body.

Original language	English
Article number	eaaw0422
Journal	Science
Volume	364
Issue number	6437
DOIs	https://doi.org/10.1126/science.aaw0422
Publication status	Published - 2019
Externally published	Yes

All Science Journal Classification (ASJC) codes

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10.1126/science.aaw0422

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Sugita, S., Honda, R., Morota, T., Kameda, S., Sawada, H., Tatsumi, E., Yamada, M., Honda, C., Yokota, Y., Kouyama, T., Sakatani, N., Ogawa, K., Suzuki, H., Okada, T., Namiki, N., Tanaka, S., Iijima, Y., Yoshioka, K., Hayakawa, M., ... Tsuda, Y. (2019). The geomorphology, color, and thermal properties of Ryugu: Implications for parent-body processes. Science, 364(6437), [eaaw0422]. https://doi.org/10.1126/science.aaw0422

Sugita, S, Honda, R, Morota, T, Kameda, S, Sawada, H, Tatsumi, E, Yamada, M, Honda, C, Yokota, Y, Kouyama, T, Sakatani, N, Ogawa, K, Suzuki, H, Okada, T, Namiki, N, Tanaka, S, Iijima, Y, Yoshioka, K, Hayakawa, M, Cho, Y, Matsuoka, M, Hirata, N, Hirata, N, Miyamoto, H, Domingue, D, Hirabayashi, M, Nakamura, T, Hiroi, T, Michikami, T, Michel, P, Ballouz, RL, Barnouin, OS, Ernst, CM, Schröder, SE, Kikuchi, H, Hemmi, R, Komatsu, G, Fukuhara, T, Taguchi, M, Arai, T, Senshu, H, Demura, H, Ogawa, Y, Shimaki, Y, Sekiguchi, T, Müller, TG, Hagermann, A, Mizuno, T, Noda, H, Matsumoto, K, Yamada, R, Ishihara, Y, Ikeda, H, Araki, H, Yamamoto, K, Abe, S, Yoshida, F, Higuchi, A, Sasaki, S, Oshigami, S, Tsuruta, S, Asari, K, Tazawa, S, Shizugami, M, Kimura, J, Otsubo, T, Yabuta, H, Hasegawa, S, Ishiguro, M, Tachibana, S, Palmer, E, Gaskell, R, Le Corre, L, Jaumann, R, Otto, K, Schmitz, N, Abell, PA, Barucci, MA, Zolensky, ME, Vilas, F, Thuillet, F, Sugimoto, C, Takaki, N, Suzuki, Y, Kamiyoshihara, H, Okada, M, Nagata, K, Fujimoto, M, Yoshikawa, M, Yamamoto, Y, Shirai, K, Noguchi, R, Ogawa, N, Terui, F, Kikuchi, S, Yamaguchi, T, Oki, Y, Takao, Y, Takeuchi, H, Ono, G, Mimasu, Y, Yoshikawa, K, Takahashi, T, Takei, Y, Fujii, A, Hirose, C, Nakazawa, S, Hosoda, S, Mori, O, Shimada, T, Soldini, S, Iwata, T, Abe, M, Yano, H, Tsukizaki, R, Ozaki, M, Nishiyama, K, Saiki, T, Watanabe, S & Tsuda, Y 2019, 'The geomorphology, color, and thermal properties of Ryugu: Implications for parent-body processes', Science, vol. 364, no. 6437, eaaw0422. https://doi.org/10.1126/science.aaw0422

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title = "The geomorphology, color, and thermal properties of Ryugu: Implications for parent-body processes",

abstract = "The near-Earth carbonaceous asteroid 162173 Ryugu is thought to have been produced from a parent body that contained water ice and organic molecules. The Hayabusa2 spacecraft has obtained global multicolor images of Ryugu. Geomorphological features present include a circum-equatorial ridge, east-west dichotomy, high boulder abundances across the entire surface, and impact craters. Age estimates from the craters indicate a resurfacing age of ≤ 106 years for the top 1-meter layer. Ryugu is among the darkest known bodies in the Solar System. The high abundance and spectral properties of boulders are consistent with moderately dehydrated materials, analogous to thermally metamorphosed meteorites found on Earth. The general uniformity in color across Ryugu's surface supports partial dehydration due to internal heating of the asteroid's parent body.",

author = "S. Sugita and R. Honda and T. Morota and S. Kameda and H. Sawada and E. Tatsumi and M. Yamada and C. Honda and Y. Yokota and T. Kouyama and N. Sakatani and K. Ogawa and H. Suzuki and T. Okada and N. Namiki and S. Tanaka and Y. Iijima and K. Yoshioka and M. Hayakawa and Y. Cho and M. Matsuoka and N. Hirata and N. Hirata and H. Miyamoto and D. Domingue and M. Hirabayashi and T. Nakamura and T. Hiroi and T. Michikami and P. Michel and Ballouz, {R. L.} and Barnouin, {O. S.} and Ernst, {C. M.} and Schr{\"o}der, {S. E.} and H. Kikuchi and R. Hemmi and G. Komatsu and T. Fukuhara and M. Taguchi and T. Arai and H. Senshu and H. Demura and Y. Ogawa and Y. Shimaki and T. Sekiguchi and M{\"u}ller, {T. G.} and A. Hagermann and T. Mizuno and H. Noda and K. Matsumoto and R. Yamada and Y. Ishihara and H. Ikeda and H. Araki and K. Yamamoto and S. Abe and F. Yoshida and A. Higuchi and S. Sasaki and S. Oshigami and S. Tsuruta and K. Asari and S. Tazawa and M. Shizugami and J. Kimura and T. Otsubo and H. Yabuta and S. Hasegawa and M. Ishiguro and S. Tachibana and E. Palmer and R. Gaskell and {Le Corre}, L. and R. Jaumann and K. Otto and N. Schmitz and Abell, {P. A.} and Barucci, {M. A.} and Zolensky, {M. E.} and F. Vilas and F. Thuillet and C. Sugimoto and N. Takaki and Y. Suzuki and H. Kamiyoshihara and M. Okada and K. Nagata and M. Fujimoto and M. Yoshikawa and Y. Yamamoto and K. Shirai and R. Noguchi and N. Ogawa and F. Terui and S. Kikuchi and T. Yamaguchi and Y. Oki and Y. Takao and H. Takeuchi and G. Ono and Y. Mimasu and K. Yoshikawa and T. Takahashi and Y. Takei and A. Fujii and C. Hirose and S. Nakazawa and S. Hosoda and O. Mori and T. Shimada and S. Soldini and T. Iwata and M. Abe and H. Yano and R. Tsukizaki and M. Ozaki and K. Nishiyama and T. Saiki and S. Watanabe and Y. Tsuda",

year = "2019",

doi = "10.1126/science.aaw0422",

language = "English",

volume = "364",

journal = "Science",

issn = "0036-8075",

publisher = "American Association for the Advancement of Science",

number = "6437",

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TY - JOUR

T1 - The geomorphology, color, and thermal properties of Ryugu

T2 - Implications for parent-body processes

AU - Sugita, S.

AU - Honda, R.

AU - Morota, T.

AU - Kameda, S.

AU - Sawada, H.

AU - Tatsumi, E.

AU - Yamada, M.

AU - Honda, C.

AU - Yokota, Y.

AU - Kouyama, T.

AU - Sakatani, N.

AU - Ogawa, K.

AU - Suzuki, H.

AU - Okada, T.

AU - Namiki, N.

AU - Tanaka, S.

AU - Iijima, Y.

AU - Yoshioka, K.

AU - Hayakawa, M.

AU - Cho, Y.

AU - Matsuoka, M.

AU - Hirata, N.

AU - Miyamoto, H.

AU - Domingue, D.

AU - Hirabayashi, M.

AU - Nakamura, T.

AU - Hiroi, T.

AU - Michikami, T.

AU - Michel, P.

AU - Ballouz, R. L.

AU - Barnouin, O. S.

AU - Ernst, C. M.

AU - Schröder, S. E.

AU - Kikuchi, H.

AU - Hemmi, R.

AU - Komatsu, G.

AU - Fukuhara, T.

AU - Taguchi, M.

AU - Arai, T.

AU - Senshu, H.

AU - Demura, H.

AU - Ogawa, Y.

AU - Shimaki, Y.

AU - Sekiguchi, T.

AU - Müller, T. G.

AU - Hagermann, A.

AU - Mizuno, T.

AU - Noda, H.

AU - Matsumoto, K.

AU - Yamada, R.

AU - Ishihara, Y.

AU - Ikeda, H.

AU - Araki, H.

AU - Yamamoto, K.

AU - Abe, S.

AU - Yoshida, F.

AU - Higuchi, A.

AU - Sasaki, S.

AU - Oshigami, S.

AU - Tsuruta, S.

AU - Asari, K.

AU - Tazawa, S.

AU - Shizugami, M.

AU - Kimura, J.

AU - Otsubo, T.

AU - Yabuta, H.

AU - Hasegawa, S.

AU - Ishiguro, M.

AU - Tachibana, S.

AU - Palmer, E.

AU - Gaskell, R.

AU - Le Corre, L.

AU - Jaumann, R.

AU - Otto, K.

AU - Schmitz, N.

AU - Abell, P. A.

AU - Barucci, M. A.

AU - Zolensky, M. E.

AU - Vilas, F.

AU - Thuillet, F.

AU - Sugimoto, C.

AU - Takaki, N.

AU - Suzuki, Y.

AU - Kamiyoshihara, H.

AU - Okada, M.

AU - Nagata, K.

AU - Fujimoto, M.

AU - Yoshikawa, M.

AU - Yamamoto, Y.

AU - Shirai, K.

AU - Noguchi, R.

AU - Ogawa, N.

AU - Terui, F.

AU - Kikuchi, S.

AU - Yamaguchi, T.

AU - Oki, Y.

AU - Takao, Y.

AU - Takeuchi, H.

AU - Ono, G.

AU - Mimasu, Y.

AU - Yoshikawa, K.

AU - Takahashi, T.

AU - Takei, Y.

AU - Fujii, A.

AU - Hirose, C.

AU - Nakazawa, S.

AU - Hosoda, S.

AU - Mori, O.

AU - Shimada, T.

AU - Soldini, S.

AU - Iwata, T.

AU - Abe, M.

AU - Yano, H.

AU - Tsukizaki, R.

AU - Ozaki, M.

AU - Nishiyama, K.

AU - Saiki, T.

AU - Watanabe, S.

AU - Tsuda, Y.

PY - 2019

Y1 - 2019

N2 - The near-Earth carbonaceous asteroid 162173 Ryugu is thought to have been produced from a parent body that contained water ice and organic molecules. The Hayabusa2 spacecraft has obtained global multicolor images of Ryugu. Geomorphological features present include a circum-equatorial ridge, east-west dichotomy, high boulder abundances across the entire surface, and impact craters. Age estimates from the craters indicate a resurfacing age of ≤ 106 years for the top 1-meter layer. Ryugu is among the darkest known bodies in the Solar System. The high abundance and spectral properties of boulders are consistent with moderately dehydrated materials, analogous to thermally metamorphosed meteorites found on Earth. The general uniformity in color across Ryugu's surface supports partial dehydration due to internal heating of the asteroid's parent body.

AB - The near-Earth carbonaceous asteroid 162173 Ryugu is thought to have been produced from a parent body that contained water ice and organic molecules. The Hayabusa2 spacecraft has obtained global multicolor images of Ryugu. Geomorphological features present include a circum-equatorial ridge, east-west dichotomy, high boulder abundances across the entire surface, and impact craters. Age estimates from the craters indicate a resurfacing age of ≤ 106 years for the top 1-meter layer. Ryugu is among the darkest known bodies in the Solar System. The high abundance and spectral properties of boulders are consistent with moderately dehydrated materials, analogous to thermally metamorphosed meteorites found on Earth. The general uniformity in color across Ryugu's surface supports partial dehydration due to internal heating of the asteroid's parent body.

UR - http://www.scopus.com/inward/record.url?scp=85064042059&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85064042059&partnerID=8YFLogxK

U2 - 10.1126/science.aaw0422

DO - 10.1126/science.aaw0422

M3 - Article

C2 - 30890587

AN - SCOPUS:85064042059

SN - 0036-8075

VL - 364

JO - Science

JF - Science

IS - 6437

M1 - eaaw0422

ER -

The geomorphology, color, and thermal properties of Ryugu: Implications for parent-body processes

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