Mutual positions of the Galilean satellites of Jupiter from photometric observations during their mutual occultations and eclipses in 1997

We report the final results of the 1997 campaign of photometric observation s of the mutual phenomena of the Galilean satellites carried out at observa tories in Kazakhstan, Russia, and Ukraine. Our results contribute substanti ally to the world data bank of such observations and will allow the model o f the motion of Galilean satellites to be further refined. To facilitate th e use of photometric data, we reduced them by computing the planetocentric rectangular coordinate differences of satellite pairs for a number of insta nts of time so we deduce the differences for one instant from one observed light curve. It is these reduced data tl:lat constitute the principal resul t of this work. We based our data reduction on the method which we det-elop ed in earlier papers (Emel'yanov 1999; Emel'yanov 2000). The accuracy of ob servations was estimated in the process of reduction. The paper also descri bes the equipment used.