Marco Polo: A Sample Return Mission to a Primitive Near-Earth Object in Assessment Study in the ESA Program Cosmic Vision 2015-2025

PRIMITIVE NEAR-EARTH OBJECT IN ASSESSMENT STUDY IN THE ESA PROGRAM COSMIC VISION 2015– 2025. P. Michel, A. Barucci, D. Koschny, M. Yoshikawa, H. Boenhardt, J. Brucato, E. Dotto, I. Franchi, S. Green, J. L. Josset, J. Kawagushi, K. Muinonen, J. Oberst, H. Yano, R. Binzel, D. Agnolon, and J. Romstedt. Unive. Nice-Sophia Antipolis, Côte d’Azur Observatory, France E-mail: Patrick.michel@oca.eu. Paris Observatory, France, ESA/ESTEC, Netherlands, JAXA/JSPEC, Japan, MPI Lindau, Germany, INAF-OAA, Florence, Italy, INAF-OAR, Rome, Italy, Open University, Uk, Space Exploration Institute, Switzerland, Univ. Helsinski Observatory, Finland, DLR, Germany, MIT, USA.