Largest Natural Planetary Satellites

		Astronomical radius		Average distance from planet
Planet	Satellite	km	mi	km	mi	Orbital period (days)

Jupiter	Ganymede	2,634	1,637	1,070,000	664,900	7.155
Saturn	Titan	2,575	1,600	1,222,000	759,200	15.95
Jupiter	Callisto	2,403	1,493	1,883,000	1,170,000	16.69
Jupiter	Io	1,830	1,137	422,000	262,200	1.769
Earth	Moon	1,737	1,080	384,400	238,900	27.32
Jupiter	Europa	1,565	972	671,000	416,900	3.551
Neptune	Triton	1,353	841	354,800	220,400	5.877