The surface composition of asteroid 162173 Ryugu from Hayabusa2 near-infrared spectroscopy

K. Kitazato; R. E. Milliken; T. Iwata; M. Abe; M. Ohtake; S. Matsuura; T. Arai; Y. Nakauchi; T. Nakamura; M. Matsuoka; H. Senshu; N. Hirata; T. Hiroi; C. Pilorget; R. Brunetto; F. Poulet; L. Riu; J. P. Bibring; D. Takir; D. L. Domingue; F. Vilas; M. A. Barucci; D. Perna; E. Palomba; A. Galiano; K. Tsumura; T. Osawa; M. Komatsu; A. Nakato; T. Arai; N. Takato; T. Matsunaga; Y. Takagi; K. Matsumoto; T. Kouyama; Y. Yokota; E. Tatsumi; N. Sakatani; Y. Yamamoto; T. Okada; S. Sugita; R. Honda; T. Morota; S. Kameda; H. Sawada; C. Honda; M. Yamada; H. Suzuki; K. Yoshioka; M. Hayakawa; K. Ogawa; Y. Cho; K. Shirai; Y. Shimaki; N. Hirata; A. Yamaguchi; N. Ogawa; F. Terui; T. Yamaguchi; Y. Takei; T. Saiki; S. Nakazawa; S. Tanaka; M. Yoshikawa; S. Watanabe; Y. Tsuda

doi:10.1126/science.aav7432

The surface composition of asteroid 162173 Ryugu from Hayabusa2 near-infrared spectroscopy

K. Kitazato, R. E. Milliken, T. Iwata, M. Abe, M. Ohtake, S. Matsuura, T. Arai, Y. Nakauchi, T. Nakamura, M. Matsuoka, H. Senshu, N. Hirata, T. Hiroi, C. Pilorget, R. Brunetto, F. Poulet, L. Riu, J. P. Bibring, D. Takir, D. L. DomingueF. Vilas, M. A. Barucci, D. Perna, E. Palomba, A. Galiano, K. Tsumura, T. Osawa, M. Komatsu, A. Nakato, T. Arai, N. Takato, T. Matsunaga, Y. Takagi, K. Matsumoto, T. Kouyama, Y. Yokota, E. Tatsumi, N. Sakatani, Y. Yamamoto, T. Okada, S. Sugita, R. Honda, T. Morota, S. Kameda, H. Sawada, C. Honda, M. Yamada, H. Suzuki, K. Yoshioka, M. Hayakawa, K. Ogawa, Y. Cho, K. Shirai, Y. Shimaki, N. Hirata, A. Yamaguchi, N. Ogawa, F. Terui, T. Yamaguchi, Y. Takei, T. Saiki, S. Nakazawa, S. Tanaka, M. Yoshikawa, S. Watanabe, Y. Tsuda

SCI - Earth Science

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228 Citations (Scopus)

Abstract

The near-Earth asteroid 162173 Ryugu, the target of the Hayabusa2 sample-return mission, is thought to be a primitive carbonaceous object. We report reflectance spectra of Ryugu's surface acquired with the Near-Infrared Spectrometer (NIRS3) on Hayabusa2, to provide direct measurements of the surface composition and geological context for the returned samples. A weak, narrow absorption feature centered at 2.72 micrometers was detected across the entire observed surface, indicating that hydroxyl (OH)-bearing minerals are ubiquitous there. The intensity of the OH feature and low albedo are similar to thermally and/or shock-metamorphosed carbonaceous chondrite meteorites. There are few variations in the OH-band position, which is consistent with Ryugu being a compositionally homogeneous rubble-pile object generated from impact fragments of an undifferentiated aqueously altered parent body.

Original language	English
Pages (from-to)	272-275
Number of pages	4
Journal	Science
Volume	364
Issue number	6437
DOIs	https://doi.org/10.1126/science.aav7432
Publication status	Published - 2019

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Kitazato, K., Milliken, R. E., Iwata, T., Abe, M., Ohtake, M., Matsuura, S., Arai, T., Nakauchi, Y., Nakamura, T., Matsuoka, M., Senshu, H., Hirata, N., Hiroi, T., Pilorget, C., Brunetto, R., Poulet, F., Riu, L., Bibring, J. P., Takir, D., ... Tsuda, Y. (2019). The surface composition of asteroid 162173 Ryugu from Hayabusa2 near-infrared spectroscopy. Science, 364(6437), 272-275. https://doi.org/10.1126/science.aav7432

@article{244b044934bb4058b531a030a4832b43,

title = "The surface composition of asteroid 162173 Ryugu from Hayabusa2 near-infrared spectroscopy",

abstract = "The near-Earth asteroid 162173 Ryugu, the target of the Hayabusa2 sample-return mission, is thought to be a primitive carbonaceous object. We report reflectance spectra of Ryugu's surface acquired with the Near-Infrared Spectrometer (NIRS3) on Hayabusa2, to provide direct measurements of the surface composition and geological context for the returned samples. A weak, narrow absorption feature centered at 2.72 micrometers was detected across the entire observed surface, indicating that hydroxyl (OH)-bearing minerals are ubiquitous there. The intensity of the OH feature and low albedo are similar to thermally and/or shock-metamorphosed carbonaceous chondrite meteorites. There are few variations in the OH-band position, which is consistent with Ryugu being a compositionally homogeneous rubble-pile object generated from impact fragments of an undifferentiated aqueously altered parent body.",

author = "K. Kitazato and Milliken, {R. E.} and T. Iwata and M. Abe and M. Ohtake and S. Matsuura and T. Arai and Y. Nakauchi and T. Nakamura and M. Matsuoka and H. Senshu and N. Hirata and T. Hiroi and C. Pilorget and R. Brunetto and F. Poulet and L. Riu and Bibring, {J. P.} and D. Takir and Domingue, {D. L.} and F. Vilas and Barucci, {M. A.} and D. Perna and E. Palomba and A. Galiano and K. Tsumura and T. Osawa and M. Komatsu and A. Nakato and T. Arai and N. Takato and T. Matsunaga and Y. Takagi and K. Matsumoto and T. Kouyama and Y. Yokota and E. Tatsumi and N. Sakatani and Y. Yamamoto and T. Okada and S. Sugita and R. Honda and T. Morota and S. Kameda and H. Sawada and C. Honda and M. Yamada and H. Suzuki and K. Yoshioka and M. Hayakawa and K. Ogawa and Y. Cho and K. Shirai and Y. Shimaki and N. Hirata and A. Yamaguchi and N. Ogawa and F. Terui and T. Yamaguchi and Y. Takei and T. Saiki and S. Nakazawa and S. Tanaka and M. Yoshikawa and S. Watanabe and Y. Tsuda",

year = "2019",

doi = "10.1126/science.aav7432",

language = "English",

volume = "364",

pages = "272--275",

journal = "Science",

issn = "0036-8075",

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

number = "6437",

}

Kitazato, K, Milliken, RE, Iwata, T, Abe, M, Ohtake, M, Matsuura, S, Arai, T, Nakauchi, Y, Nakamura, T, Matsuoka, M, Senshu, H, Hirata, N, Hiroi, T, Pilorget, C, Brunetto, R, Poulet, F, Riu, L, Bibring, JP, Takir, D, Domingue, DL, Vilas, F, Barucci, MA, Perna, D, Palomba, E, Galiano, A, Tsumura, K, Osawa, T, Komatsu, M, Nakato, A, Arai, T, Takato, N, Matsunaga, T, Takagi, Y, Matsumoto, K, Kouyama, T, Yokota, Y, Tatsumi, E, Sakatani, N, Yamamoto, Y, Okada, T, Sugita, S, Honda, R, Morota, T, Kameda, S, Sawada, H, Honda, C, Yamada, M, Suzuki, H, Yoshioka, K, Hayakawa, M, Ogawa, K, Cho, Y, Shirai, K, Shimaki, Y, Hirata, N, Yamaguchi, A, Ogawa, N, Terui, F, Yamaguchi, T, Takei, Y, Saiki, T, Nakazawa, S, Tanaka, S, Yoshikawa, M, Watanabe, S & Tsuda, Y 2019, 'The surface composition of asteroid 162173 Ryugu from Hayabusa2 near-infrared spectroscopy', Science, vol. 364, no. 6437, pp. 272-275. https://doi.org/10.1126/science.aav7432

TY - JOUR

T1 - The surface composition of asteroid 162173 Ryugu from Hayabusa2 near-infrared spectroscopy

AU - Kitazato, K.

AU - Milliken, R. E.

AU - Iwata, T.

AU - Abe, M.

AU - Ohtake, M.

AU - Matsuura, S.

AU - Arai, T.

AU - Nakauchi, Y.

AU - Nakamura, T.

AU - Matsuoka, M.

AU - Senshu, H.

AU - Hirata, N.

AU - Hiroi, T.

AU - Pilorget, C.

AU - Brunetto, R.

AU - Poulet, F.

AU - Riu, L.

AU - Bibring, J. P.

AU - Takir, D.

AU - Domingue, D. L.

AU - Vilas, F.

AU - Barucci, M. A.

AU - Perna, D.

AU - Palomba, E.

AU - Galiano, A.

AU - Tsumura, K.

AU - Osawa, T.

AU - Komatsu, M.

AU - Nakato, A.

AU - Arai, T.

AU - Takato, N.

AU - Matsunaga, T.

AU - Takagi, Y.

AU - Matsumoto, K.

AU - Kouyama, T.

AU - Yokota, Y.

AU - Tatsumi, E.

AU - Sakatani, N.

AU - Yamamoto, Y.

AU - Okada, T.

AU - Sugita, S.

AU - Honda, R.

AU - Morota, T.

AU - Kameda, S.

AU - Sawada, H.

AU - Honda, C.

AU - Yamada, M.

AU - Suzuki, H.

AU - Yoshioka, K.

AU - Hayakawa, M.

AU - Ogawa, K.

AU - Cho, Y.

AU - Shirai, K.

AU - Shimaki, Y.

AU - Hirata, N.

AU - Yamaguchi, A.

AU - Ogawa, N.

AU - Terui, F.

AU - Yamaguchi, T.

AU - Takei, Y.

AU - Saiki, T.

AU - Nakazawa, S.

AU - Tanaka, S.

AU - Yoshikawa, M.

AU - Watanabe, S.

AU - Tsuda, Y.

PY - 2019

Y1 - 2019

N2 - The near-Earth asteroid 162173 Ryugu, the target of the Hayabusa2 sample-return mission, is thought to be a primitive carbonaceous object. We report reflectance spectra of Ryugu's surface acquired with the Near-Infrared Spectrometer (NIRS3) on Hayabusa2, to provide direct measurements of the surface composition and geological context for the returned samples. A weak, narrow absorption feature centered at 2.72 micrometers was detected across the entire observed surface, indicating that hydroxyl (OH)-bearing minerals are ubiquitous there. The intensity of the OH feature and low albedo are similar to thermally and/or shock-metamorphosed carbonaceous chondrite meteorites. There are few variations in the OH-band position, which is consistent with Ryugu being a compositionally homogeneous rubble-pile object generated from impact fragments of an undifferentiated aqueously altered parent body.

AB - The near-Earth asteroid 162173 Ryugu, the target of the Hayabusa2 sample-return mission, is thought to be a primitive carbonaceous object. We report reflectance spectra of Ryugu's surface acquired with the Near-Infrared Spectrometer (NIRS3) on Hayabusa2, to provide direct measurements of the surface composition and geological context for the returned samples. A weak, narrow absorption feature centered at 2.72 micrometers was detected across the entire observed surface, indicating that hydroxyl (OH)-bearing minerals are ubiquitous there. The intensity of the OH feature and low albedo are similar to thermally and/or shock-metamorphosed carbonaceous chondrite meteorites. There are few variations in the OH-band position, which is consistent with Ryugu being a compositionally homogeneous rubble-pile object generated from impact fragments of an undifferentiated aqueously altered parent body.

UR - http://www.scopus.com/inward/record.url?scp=85064039118&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85064039118&partnerID=8YFLogxK

U2 - 10.1126/science.aav7432

DO - 10.1126/science.aav7432

M3 - Article

C2 - 30890589

AN - SCOPUS:85064039118

SN - 0036-8075

VL - 364

SP - 272

EP - 275

JO - Science

JF - Science

IS - 6437

ER -

The surface composition of asteroid 162173 Ryugu from Hayabusa2 near-infrared spectroscopy

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