The Minor Planet Center databse contains noadays more than 15,400 Near Earth Asteroids (NEA). A fraction of NEAs are the most accessible objects by the space missions in terms of propulsion requirements. Another fraction of NEAs are investigated in terms of risk and natural hazards, with an important interest in developing threatening space technologies and orbital mitigation of these bodies.

On average five favorable geometries per century for groundbased observation occurs for NEAs. Thus, the scheduling of observations for these observational windows is crucial for the physical and mineralogical characterization of NEAs. The presentation objective is to give an overvieww of spectral observations of NEAs as well as their mineralogical interpretations.