SMART-1 Osculating Orbit up to 25.08.04
In this diagram the osculating orbits at launch (GTO) and at different times are plotted. The large effects on the orbit expansion, that the combination of the operations of the electric propulsion together with the Moon encounter have, are clearly visible. The Moon effects are mainly in the increase of the perigee altitude and in the rotation of the line of apsides (change in argument of perigee).
Since the start of the mission the orbital elements have been changed by the ion-engine and the first lunar resonance as follows: