Publication Details

Macro-scale roughness reveals the complex history of asteroids Didymos and Dimorphos

VINCENT Jean-baptiste, KOHOUT Tomáš and KAŠPÁREK Tomáš et al. Macro-scale roughness reveals the complex history of asteroids Didymos and Dimorphos. The Planetary Science Journal, vol. 5, no. 10, 2024, pp. 1-29. ISSN 2632-3338. Available from: https://iopscience.iop.org/article/10.3847/PSJ/ad7a01
Type
journal article
Language
english
Authors
Vincent Jean-baptiste ()
Kohout Tomáš ()
and others
URL
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
Publisher
Amercian Astronomical Society
DOI
BibTeX
@ARTICLE{FITPUB13175,
   author = "Jean-baptiste Vincent and Tom\'{a}\v{s} Kohout and Tom\'{a}\v{s} Ka\v{s}p\'{a}rek and et al.",
   title = "Macro-scale roughness reveals the complex history of asteroids Didymos and Dimorphos",
   pages = "1--29",
   journal = "The Planetary Science Journal",
   volume = 5,
   number = 10,
   year = 2024,
   ISSN = "2632-3338",
   doi = "10.3847/PSJ/ad7a01",
   language = "english",
   url = "https://www.fit.vut.cz/research/publication/13175"
}
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