Publication Details
Macroscale Roughness Reveals the Complex History of Asteroids Didymos and Dimorphos
Morphological mapping, asteroid, topographic roughness, entropy, Didymos,
Dimorphos
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.
@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"
}