An Updated Shape Model of Dimorphos from DART Data,The Planetary Science Journal

当前位置： X-MOL 学术 › Planet. Sci. J. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

An Updated Shape Model of Dimorphos from DART Data
The Planetary Science Journal Pub Date : 2024-01-29 , DOI: 10.3847/psj/ad0b07
R. Terik Daly , Carolyn M. Ernst , Olivier S. Barnouin , Robert W. Gaskell , Hari Nair , Harrison Agrusa , Nancy L. Chabot , Andrew F. Cheng , Elisabetta Dotto , Elena Mazzotta Epifani , Raymond C. Espiritu , Tony L. Farnham , Eric E. Palmer , Petr Pravec , Andrew S. Rivkin , Dany C. Waller , Angelo Zinzi ,

Dimorphos was the target of the Double Asteroid Redirection Test (DART) mission. This paper summarizes the properties of an updated shape model of Dimorphos, describes the differences between the updated shape model and an earlier version published by Daly, Ernst, Barnouin et al. (doi:10.1038/s41586-023-05810-5), summarizes the data products associated with this model, and explains where the products can be accessed. The updated shape model benefited from improved methods of incorporating limb information, which will accelerate future shape modeling efforts for other objects with limited imaging data. The updated shape model is similar to the earlier model but slightly smaller (−2.8% change in volume) than the previous Dimorphos global shape model, and the updated shape is slightly more elongated. The additional analysis reported here supports an oblate preimpact shape for Dimorphos. This result indicates that the postimpact elongation of Dimorphos derived from ground-based observations is evidence for a large crater or global reshaping of the asteroid due to the DART impact. The updated global shape model of Dimorphos, as well as the earlier version, will be available in the Planetary Data System Small Bodies Node and through the public Small Body Mapping Tool.

更新日期：2024-01-29

点击分享查看原文

点击收藏

公开下载

阅读更多本刊最新论文

全部期刊列表>>