Thermal infrared observations of asteroid (99942) Apophis with Herschel T. G. Müller, C. Kiss, P. Scheirich, P. Pravec, L. O’Rourke, E. Vilenius and B. Altieri A&A, 566 (2014) A22 Published online: 02 June 2014 DOI: 10.1051/0004-6361/201423841