The shape of (7) Iris as evidence of an ancient large impact? J. Hanuš, M. Marsset, P. Vernazza, M. Viikinkoski, A. Drouard, M. Brož, B. Carry, R. Fetick, F. Marchis, L. Jorda et al. (28 more) A&A, 624 (2019) A121 Published online: 24 April 2019 DOI: 10.1051/0004-6361/201834541