Table 1:

Parameter values of our standard scenario.

	Parameter	Standard value	Comment
		8 kpc	distance to Galactic bulge
		6 kpc
			most abundant type of star
			km s-1 at  kpc
*		10-3	Jupiter/Sun mass ratio
*			wide separation caustic
*		10-2	Moon/Earth mass ratio
*			planetary Einstein radius
*			brightness requirements vs. stellar abundance
*			high-cadence observation
*		20 mmag	typical value in past observations

Notes. Parameters marked with an asterisk (*) are varied in our simulations in order to evaluate their influence on the lunar detection rate and to compare different triple-lens scenarios. The fixed parameters lead to values for the Einstein ring radius,  mas, i.e. 1.9 AU in the lens plane, and the Einstein time,  days. The lensed system is a Saturn-mass planet at a projected separation of 2.5 AU from its M-dwarf host, the Earth-mass satellite orbits the planet at 0.06 AU, i.e. 0.01 mas angular separation, cf. Fig. 10.