A basin-free spherical shape as an outcome of a giant impact on asteroid Hygiea

@article{Vernazza2020ABS,
  title={A basin-free spherical shape as an outcome of a giant impact on asteroid Hygiea},
  author={P. Vernazza and L. Jorda and P. {\vS}eve{\vc}ek and M. Broz̆ and M. Viikinkoski and J. Hanu{\vs} and B. Carry and A. Drouard and M. Ferrais and M. Marsset and F. Marchis and M. Birlan and E. Podlewska-Gaca and E. Jehin and P. Bartczak and G. Dudziński and J. Berthier and J. Castillo-Rogez and F. Cipriani and F. Colas and F. DeMeo and C. Dumas and J. Ďurech and R. F{\'e}tick and T. Fusco and J. Grice and M. Kaasalainen and A. Kryszczyńska and P. Lamy and H. Coroller and A. Marciniak and T. Michałowski and P. Michel and N. Rambaux and T. Santana-Ros and P. Tanga and F. Vachier and A. Vigan and O. Witasse and B. Yang and M. Gillon and Z. Benkhaldoun and R. Szak{\'a}ts and R. Hirsch and R. Duffard and A. Chapman and J. L. Maestre},
  journal={Nature Astronomy},
  year={2020},
  volume={4},
  pages={136-141}
}
(10) Hygiea is the fourth largest main belt asteroid and the only known asteroid whose surface composition appears similar to that of the dwarf planet (1) Ceres 1 , 2 , suggesting a similar origin for these two objects. Hygiea suffered a giant impact more than 2 Gyr ago 3 that is at the origin of one of the largest asteroid families. However, Hygeia has never been observed with sufficiently high resolution to resolve the details of its surface or to constrain its size and shape. Here, we report… Expand

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