(216) Kleopatra, a low density critically rotating M-type asteroid F. Marchis, L. Jorda, P. Vernazza, M. Brož, J. Hanuš, M. Ferrais, F. Vachier, N. Rambaux, M. Marsset, M. Viikinkoski et al. (29 more) A&A, 653 (2021) A57 Published online: 09 September 2021 DOI: 10.1051/0004-6361/202140874