Short-term rotational variability in the large TNO 2005FY9 J. L. Ortiz, P. Santos Sanz, P. J. Gutiérrez, R. Duffard and F. J. Aceituno A&A, 468 1 (2007) L13-L16 Published online: 24 April 2007 DOI: 10.1051/0004-6361:20077355