Compositional study of trans-neptunian objects at λ > 2.2μm

E. Fernández-Valenzuela, N. Pinilla-Alonso, J. Stansberry, J. P. Emery, W. Perkins, C. Van Laerhoven, B. J. Gladman, W. Fraser, D. Cruikshank, E. Lellouch, T. G. Müller, W. M. Grundy, D. Trilling, Y. Fernandez, C. Dalle Ore