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The global surface roughness of 25143 Itokawa

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The global surface roughness of 25143 Itokawa. / Susorney, Hannah C.M.; Johnson, Catherine L.; Barnouin, Olivier S.; Daly, Michael G.; Seabrook, Jeffrey A.; Bierhaus, Edward B.; Lauretta, Dante S.

In: Icarus, Vol. 325, 06.2019, p. 141-152.

Research output: Contribution to journalArticle

Harvard

Susorney, HCM, Johnson, CL, Barnouin, OS, Daly, MG, Seabrook, JA, Bierhaus, EB & Lauretta, DS 2019, 'The global surface roughness of 25143 Itokawa', Icarus, vol. 325, pp. 141-152. https://doi.org/10.1016/j.icarus.2019.01.021

APA

Susorney, H. C. M., Johnson, C. L., Barnouin, O. S., Daly, M. G., Seabrook, J. A., Bierhaus, E. B., & Lauretta, D. S. (2019). The global surface roughness of 25143 Itokawa. Icarus, 325, 141-152. https://doi.org/10.1016/j.icarus.2019.01.021

Vancouver

Susorney HCM, Johnson CL, Barnouin OS, Daly MG, Seabrook JA, Bierhaus EB et al. The global surface roughness of 25143 Itokawa. Icarus. 2019 Jun;325:141-152. https://doi.org/10.1016/j.icarus.2019.01.021

Author

Susorney, Hannah C.M. ; Johnson, Catherine L. ; Barnouin, Olivier S. ; Daly, Michael G. ; Seabrook, Jeffrey A. ; Bierhaus, Edward B. ; Lauretta, Dante S. / The global surface roughness of 25143 Itokawa. In: Icarus. 2019 ; Vol. 325. pp. 141-152.

Bibtex

@article{50a25fd59c2c461cb321e81355646112,
title = "The global surface roughness of 25143 Itokawa",
abstract = "Surface roughness is an important metric in understanding how the geologic history of an asteroid affects its small-scale topography and it provides an additional means to quantitatively compare one asteroid with another. In this study, we report the first detailed global surface roughness maps of 25143 Itokawa at horizontal scales from 8–32 m. Comparison of the spatial distribution of the surface roughness of Itokawa with 433 Eros, the other asteroid for which this kind of analysis has been possible, indicates that the two asteroids are dominated by different geologic processes. On Itokawa, the surface roughness reflects the results of down-slope activity that moves fine grained material into geopotential lows and leaves large blocks in geopotential highs. On 433 Eros, the surface roughness is controlled by geologically-recent large impact craters. In addition, large longitudinal spatial variations of surface roughness could impact the role of YORP on Itokawa.",
keywords = "Asteroids, Topography, 25143 Itokawa, 433 Eros, Surface roughness",
author = "Susorney, {Hannah C.M.} and Johnson, {Catherine L.} and Barnouin, {Olivier S.} and Daly, {Michael G.} and Seabrook, {Jeffrey A.} and Bierhaus, {Edward B.} and Lauretta, {Dante S.}",
year = "2019",
month = "6",
doi = "10.1016/j.icarus.2019.01.021",
language = "English",
volume = "325",
pages = "141--152",
journal = "Icarus",
issn = "0019-1035",
publisher = "Academic Press",

}

RIS - suitable for import to EndNote

TY - JOUR

T1 - The global surface roughness of 25143 Itokawa

AU - Susorney, Hannah C.M.

AU - Johnson, Catherine L.

AU - Barnouin, Olivier S.

AU - Daly, Michael G.

AU - Seabrook, Jeffrey A.

AU - Bierhaus, Edward B.

AU - Lauretta, Dante S.

PY - 2019/6

Y1 - 2019/6

N2 - Surface roughness is an important metric in understanding how the geologic history of an asteroid affects its small-scale topography and it provides an additional means to quantitatively compare one asteroid with another. In this study, we report the first detailed global surface roughness maps of 25143 Itokawa at horizontal scales from 8–32 m. Comparison of the spatial distribution of the surface roughness of Itokawa with 433 Eros, the other asteroid for which this kind of analysis has been possible, indicates that the two asteroids are dominated by different geologic processes. On Itokawa, the surface roughness reflects the results of down-slope activity that moves fine grained material into geopotential lows and leaves large blocks in geopotential highs. On 433 Eros, the surface roughness is controlled by geologically-recent large impact craters. In addition, large longitudinal spatial variations of surface roughness could impact the role of YORP on Itokawa.

AB - Surface roughness is an important metric in understanding how the geologic history of an asteroid affects its small-scale topography and it provides an additional means to quantitatively compare one asteroid with another. In this study, we report the first detailed global surface roughness maps of 25143 Itokawa at horizontal scales from 8–32 m. Comparison of the spatial distribution of the surface roughness of Itokawa with 433 Eros, the other asteroid for which this kind of analysis has been possible, indicates that the two asteroids are dominated by different geologic processes. On Itokawa, the surface roughness reflects the results of down-slope activity that moves fine grained material into geopotential lows and leaves large blocks in geopotential highs. On 433 Eros, the surface roughness is controlled by geologically-recent large impact craters. In addition, large longitudinal spatial variations of surface roughness could impact the role of YORP on Itokawa.

KW - Asteroids

KW - Topography

KW - 25143 Itokawa

KW - 433 Eros

KW - Surface roughness

U2 - 10.1016/j.icarus.2019.01.021

DO - 10.1016/j.icarus.2019.01.021

M3 - Article

VL - 325

SP - 141

EP - 152

JO - Icarus

JF - Icarus

SN - 0019-1035

ER -