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. 2022 Jan 18;13:364. doi: 10.1038/s41467-022-28051-y

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© The Author(s) 2022

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 1 — a MASCAM image of the boulder taken during night illuminated by the red LED array of MASCAM¹³. The text below the image denotes the image number. The boulder is of the common, dark, rugged type of boulders on Ryugu. b The DEM of the boulder³⁷ with the combined field of view of the MARA instrument’s six channels shown in red. Axis show the orientation of the DEM within the asteroid’s body-fixed frame for panels b and c. c Same scene as in b overlaid by a snapshot of the thermal model calculation showing the heterogenous temperatures within the MARA field of view due to the boulder roughness.