Rotational spectra of (162173) 1999 JU3, the target of the Hayabusa2 mission D. Lazzaro, M. A. Barucci, D. Perna, F. L. Jasmim, M. Yoshikawa and J. M. F. Carvano A&A, 549 (2013) L2 Published online: 11 December 2012 DOI: 10.1051/0004-6361/201220629