The nucleus of Comet 9P/Tempel 1: Shape and geology from two flybys

Cornell University, Ithaca, NY 14853, USA University of Maryland, College Park, MD 20742, USA Belton Space Exploration Initiatives, Tucson, AZ 85716, USA University of Washington, Seattle, WA 98195, USA Brown University, Providence, RI 02912, USA f Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA h Space Science Institute, Boulder, CO 80301, USA i Laboratoire d’Astrophysique de Marseille, 13388 Marseille Cedex 13, France j Space Science Institute, La Canada, CA 91011, USA Max Planck Institute for Solar System Research, Katlenburg-Lindau, Germany University of Hawaii, Honolulu, HI 96822, USA m Purdue University, Lafayette, IN 47907, USA University of Rochester, Rochester, NY 14627, USA