Particle size-frequency distributions of the osiris-rex candidate sample sites on asteroid (101955) bennu

Keara N. Burke; Daniella N. Dellagiustina; Carina A. Bennett; Kevin J. Walsh; Maurizio Pajola; Edward B. Bierhaus; Michael C. Nolan; William V. Boynton; Juliette I. Brodbeck; Harold C. Connolly; Jasinghege Don Prasanna Deshapriya; Jason P. Dworkin; Catherine M. Elder; Dathon R. Golish; Rachael H. Hoover; Erica R. Jawin; Timothy J. McCoy; Patrick Michel; Jamie L. Molaro; Jennifer O. Nolau; Jacob Padilla; Bashar Rizk; Stuart J. Robbins; Eric M. Sahr; Peter H. Smith; Stephanie J. Stewart; Hannah C.M. Susorney; Heather L. Enos; Dante S. Lauretta

doi:10.3390/rs13071315

Particle size-frequency distributions of the osiris-rex candidate sample sites on asteroid (101955) bennu

Keara N. Burke, Daniella N. Dellagiustina, Carina A. Bennett, Kevin J. Walsh, Maurizio Pajola, Edward B. Bierhaus, Michael C. Nolan, William V. Boynton, Juliette I. Brodbeck, Harold C. Connolly, Jasinghege Don Prasanna Deshapriya, Jason P. Dworkin, Catherine M. Elder, Dathon R. Golish, Rachael H. Hoover, Erica R. Jawin, Timothy J. McCoy, Patrick Michel, Jamie L. Molaro, Jennifer O. NolauJacob Padilla, Bashar Rizk, Stuart J. Robbins, Eric M. Sahr, Peter H. Smith, Stephanie J. Stewart, Hannah C.M. Susorney, Heather L. Enos, Dante S. Lauretta

Research output: Contribution to journal › Article › peer-review

38 Scopus citations

Abstract

We manually mapped particles ranging in longest axis from 0.3 cm to 95 m on (101955) Bennu for the Origins, Spectral Interpretation, Resource Identification, and Security–Regolith Explorer (OSIRIS-REx) asteroid sample return mission. This enabled the mission to identify candidate sample collection sites and shed light on the processes that have shaped the surface of this rubble-pile asteroid. Building on a global survey of particles, we used higher-resolution data from regional observations to calculate particle size-frequency distributions (PSFDs) and assess the viability of four candidate sites for sample collection (presence of unobstructed particles ≤ 2 cm). The four candidate sites have common characteristics: each is situated within a crater with a relative abundance of sampleable material. Their PSFDs, however, indicate that each site has experienced different geologic processing. The PSFD power-law slopes range from −3.0 ± 0.2 to −2.3 ± 0.1 across the four sites, based on images with a 0.01-m pixel scale. These values are consistent with, or shallower than, the global survey measurements. At one site, Osprey, the particle packing density appears to reach geometric saturation. We evaluate the uncertainty in these measurements and discuss their implications for other remotely sensed and mapped particles, and their importance to OSIRIS-REx sampling operations.

Original language	English (US)
Article number	1315
Journal	Remote Sensing
Volume	13
Issue number	7
DOIs	https://doi.org/10.3390/rs13071315
State	Published - Apr 1 2021

Keywords

Fragmentation
Particle size-frequency distributions
Power laws
Rubble-pile asteroids

ASJC Scopus subject areas

General Earth and Planetary Sciences

Access to Document

10.3390/rs13071315

Cite this

Burke, K. N., Dellagiustina, D. N., Bennett, C. A., Walsh, K. J., Pajola, M., Bierhaus, E. B., Nolan, M. C., Boynton, W. V., Brodbeck, J. I., Connolly, H. C., Deshapriya, J. D. P., Dworkin, J. P., Elder, C. M., Golish, D. R., Hoover, R. H., Jawin, E. R., McCoy, T. J., Michel, P., Molaro, J. L., ... Lauretta, D. S. (2021). Particle size-frequency distributions of the osiris-rex candidate sample sites on asteroid (101955) bennu. Remote Sensing, 13(7), Article 1315. https://doi.org/10.3390/rs13071315

Burke, KN, Dellagiustina, DN, Bennett, CA, Walsh, KJ, Pajola, M, Bierhaus, EB, Nolan, MC, Boynton, WV, Brodbeck, JI, Connolly, HC, Deshapriya, JDP, Dworkin, JP, Elder, CM, Golish, DR, Hoover, RH, Jawin, ER, McCoy, TJ, Michel, P, Molaro, JL, Nolau, JO, Padilla, J, Rizk, B, Robbins, SJ, Sahr, EM, Smith, PH, Stewart, SJ, Susorney, HCM, Enos, HL & Lauretta, DS 2021, 'Particle size-frequency distributions of the osiris-rex candidate sample sites on asteroid (101955) bennu', Remote Sensing, vol. 13, no. 7, 1315. https://doi.org/10.3390/rs13071315

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title = "Particle size-frequency distributions of the osiris-rex candidate sample sites on asteroid (101955) bennu",

abstract = "We manually mapped particles ranging in longest axis from 0.3 cm to 95 m on (101955) Bennu for the Origins, Spectral Interpretation, Resource Identification, and Security–Regolith Explorer (OSIRIS-REx) asteroid sample return mission. This enabled the mission to identify candidate sample collection sites and shed light on the processes that have shaped the surface of this rubble-pile asteroid. Building on a global survey of particles, we used higher-resolution data from regional observations to calculate particle size-frequency distributions (PSFDs) and assess the viability of four candidate sites for sample collection (presence of unobstructed particles ≤ 2 cm). The four candidate sites have common characteristics: each is situated within a crater with a relative abundance of sampleable material. Their PSFDs, however, indicate that each site has experienced different geologic processing. The PSFD power-law slopes range from −3.0 ± 0.2 to −2.3 ± 0.1 across the four sites, based on images with a 0.01-m pixel scale. These values are consistent with, or shallower than, the global survey measurements. At one site, Osprey, the particle packing density appears to reach geometric saturation. We evaluate the uncertainty in these measurements and discuss their implications for other remotely sensed and mapped particles, and their importance to OSIRIS-REx sampling operations.",

keywords = "Fragmentation, Particle size-frequency distributions, Power laws, Rubble-pile asteroids",

author = "Burke, {Keara N.} and Dellagiustina, {Daniella N.} and Bennett, {Carina A.} and Walsh, {Kevin J.} and Maurizio Pajola and Bierhaus, {Edward B.} and Nolan, {Michael C.} and Boynton, {William V.} and Brodbeck, {Juliette I.} and Connolly, {Harold C.} and Deshapriya, {Jasinghege Don Prasanna} and Dworkin, {Jason P.} and Elder, {Catherine M.} and Golish, {Dathon R.} and Hoover, {Rachael H.} and Jawin, {Erica R.} and McCoy, {Timothy J.} and Patrick Michel and Molaro, {Jamie L.} and Nolau, {Jennifer O.} and Jacob Padilla and Bashar Rizk and Robbins, {Stuart J.} and Sahr, {Eric M.} and Smith, {Peter H.} and Stewart, {Stephanie J.} and Susorney, {Hannah C.M.} and Enos, {Heather L.} and Lauretta, {Dante S.}",

note = "Publisher Copyright: {\textcopyright} 2021 by the authors. Licensee MDPI, Basel, Switzerland.",

year = "2021",

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doi = "10.3390/rs13071315",

language = "English (US)",

volume = "13",

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T1 - Particle size-frequency distributions of the osiris-rex candidate sample sites on asteroid (101955) bennu

AU - Burke, Keara N.

AU - Dellagiustina, Daniella N.

AU - Bennett, Carina A.

AU - Walsh, Kevin J.

AU - Pajola, Maurizio

AU - Bierhaus, Edward B.

AU - Nolan, Michael C.

AU - Boynton, William V.

AU - Brodbeck, Juliette I.

AU - Connolly, Harold C.

AU - Deshapriya, Jasinghege Don Prasanna

AU - Dworkin, Jason P.

AU - Elder, Catherine M.

AU - Golish, Dathon R.

AU - Hoover, Rachael H.

AU - Jawin, Erica R.

AU - McCoy, Timothy J.

AU - Michel, Patrick

AU - Molaro, Jamie L.

AU - Nolau, Jennifer O.

AU - Padilla, Jacob

AU - Rizk, Bashar

AU - Robbins, Stuart J.

AU - Sahr, Eric M.

AU - Smith, Peter H.

AU - Stewart, Stephanie J.

AU - Susorney, Hannah C.M.

AU - Enos, Heather L.

AU - Lauretta, Dante S.

PY - 2021/4/1

Y1 - 2021/4/1

N2 - We manually mapped particles ranging in longest axis from 0.3 cm to 95 m on (101955) Bennu for the Origins, Spectral Interpretation, Resource Identification, and Security–Regolith Explorer (OSIRIS-REx) asteroid sample return mission. This enabled the mission to identify candidate sample collection sites and shed light on the processes that have shaped the surface of this rubble-pile asteroid. Building on a global survey of particles, we used higher-resolution data from regional observations to calculate particle size-frequency distributions (PSFDs) and assess the viability of four candidate sites for sample collection (presence of unobstructed particles ≤ 2 cm). The four candidate sites have common characteristics: each is situated within a crater with a relative abundance of sampleable material. Their PSFDs, however, indicate that each site has experienced different geologic processing. The PSFD power-law slopes range from −3.0 ± 0.2 to −2.3 ± 0.1 across the four sites, based on images with a 0.01-m pixel scale. These values are consistent with, or shallower than, the global survey measurements. At one site, Osprey, the particle packing density appears to reach geometric saturation. We evaluate the uncertainty in these measurements and discuss their implications for other remotely sensed and mapped particles, and their importance to OSIRIS-REx sampling operations.

AB - We manually mapped particles ranging in longest axis from 0.3 cm to 95 m on (101955) Bennu for the Origins, Spectral Interpretation, Resource Identification, and Security–Regolith Explorer (OSIRIS-REx) asteroid sample return mission. This enabled the mission to identify candidate sample collection sites and shed light on the processes that have shaped the surface of this rubble-pile asteroid. Building on a global survey of particles, we used higher-resolution data from regional observations to calculate particle size-frequency distributions (PSFDs) and assess the viability of four candidate sites for sample collection (presence of unobstructed particles ≤ 2 cm). The four candidate sites have common characteristics: each is situated within a crater with a relative abundance of sampleable material. Their PSFDs, however, indicate that each site has experienced different geologic processing. The PSFD power-law slopes range from −3.0 ± 0.2 to −2.3 ± 0.1 across the four sites, based on images with a 0.01-m pixel scale. These values are consistent with, or shallower than, the global survey measurements. At one site, Osprey, the particle packing density appears to reach geometric saturation. We evaluate the uncertainty in these measurements and discuss their implications for other remotely sensed and mapped particles, and their importance to OSIRIS-REx sampling operations.

KW - Fragmentation

KW - Particle size-frequency distributions

KW - Power laws

KW - Rubble-pile asteroids

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DO - 10.3390/rs13071315

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VL - 13

JO - Remote Sensing

JF - Remote Sensing

IS - 7

M1 - 1315

ER -

Particle size-frequency distributions of the osiris-rex candidate sample sites on asteroid (101955) bennu

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Keywords

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