Publication detail

Macroscale Roughness Reveals the Complex History of Asteroids Didymos and Dimorphos

VINCENT, J. KOHOUT, T. KAŠPÁREK, T.

Original Title

Macroscale Roughness Reveals the Complex History of Asteroids Didymos and Dimorphos

Type

journal article in Web of Science

Language

English

Original 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.

Keywords

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

Authors

VINCENT, J.; KOHOUT, T.; KAŠPÁREK, T.

Released

24. 10. 2024

ISBN

2632-3338

Periodical

The Planetary Science Journal

Year of study

5

Number

10

State

United States of America

Pages from

1

Pages to

29

Pages count

29

URL

https://iopscience.iop.org/article/10.3847/PSJ/ad7a01

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"
}