Astro Index

Number of known Jovian moons as of 1974 : 13.
Number of known Jovian moons as of 2004 : 63.
Number of Jovian moons found in 2003 alone : 23.
Number of known Saturnian moons as of 1974 : 9.
Number of known Saturnian moons as of 2004 : 31.
Number of Saturnian moons found in 2003 alone : 1.
Source: Scott Sheppard