The nature of comet-asteroid transition object (3200) Phaethon J. Licandro, H. Campins, T. Mothé-Diniz, N. Pinilla-Alonso and J. de León A&A, 461 2 (2007) 751-757 Published online: 09 October 2006 DOI: 10.1051/0004-6361:20065833