Publication Details

Macroscale Roughness Reveals the Complex History of Asteroids Didymos and Dimorphos

VINCENT, J.; KOHOUT, T.; KAŠPÁREK, T. Macroscale Roughness Reveals the Complex History of Asteroids Didymos and Dimorphos. The Planetary Science Journal, 2024, vol. 5, no. 10, p. 1-29. ISSN: 2632-3338.
Czech title
Drsnost v makroměřítku odhaluje složitou historii planetek Didymos a Dimorphos
Type
journal article
Language
English
Authors
VINCENT, J.
KOHOUT, T.
Kašpárek Tomáš, Ing., Ph.D. (CVT)
and others
URL
Keywords

Morphological mapping, asteroid, topographic roughness, entropy, Didymos,
Dimorphos

Abstract

Morphological mapping is a fundamental step in studying the pro- cesses that
shaped an asteroid surface. Yet, it is challenging and often requires multiple
independent assessments by trained experts. Here, we present fast methods to
detect and characterize meaningful ter- rains from the topographic roughness:
entropy of information, and local mean surface orientation. We apply our
techniques to Didymos and Dimorphos, the target asteroids of NASA's DART mission:
first attempt to deflect an asteroid. Our methods reliably identify morpho-
logical units at multiple scales. The comparative study reveals various terrain
types, signatures of processes that transformed Didymos and Dimorphos. Didymos
shows the most heterogeneity and morphology that indicate recent resurfacing
events. Dimorphos is comparatively rougher than Didymos, which may result from
the formation process of the binary pair and past interaction between the two
bodies. Our methods can be readily applied to other bodies and data sets.

Published
2024
Pages
1–29
Journal
The Planetary Science Journal, vol. 5, no. 10, ISSN 2632-3338
DOI
UT WoS
001340752900001
EID Scopus
BibTeX
@article{BUT189528,
  author="VINCENT, J. and KOHOUT, T. and KAŠPÁREK, T.",
  title="Macroscale Roughness Reveals the Complex History of Asteroids Didymos and Dimorphos",
  journal="The Planetary Science Journal",
  year="2024",
  volume="5",
  number="10",
  pages="1--29",
  doi="10.3847/PSJ/ad7a01",
  issn="2632-3338",
  url="https://iopscience.iop.org/article/10.3847/PSJ/ad7a01"
}
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