Аннотация:Nowadays estimation of surface mineralogy of the most of asteroids can be performed only by distant measurements and modeling results of these measurements. This is the reason why it is necessary to automatize this procedure. Some time ago a program for approximation of reflectance spectra of asteroids was written. It searches for the best combination of spectra of minerals or meteorites to fit the reflectance spectrum of an asteroid. Also another program was written, that helps to estimate a taxonomic class of asteroid using its reflectance spectrum and geometric albedo.