VizieR On-line Data Catalog: J/A+A/544/A29We develop an accurate photometric model of mutual event observations of sufficiently high accuracy. Our original method is applied to derive astrometric data from photometric observations of the mutual occultations and eclipses of the Saturnian satellites. We process the 26 light curves obtained during the international campaign of photometric observations of the Saturnian satellites in 2009. (3 data files)