Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Mundilfari or Saturn XXV, is a natural satellite of Saturn. It was discovered by Brett J. Gladman, et al. in 2000, and given the temporary designation S/2000 S 9. Mundilfari is about 5.6 kilometres in diameter, and orbits Saturn at an average distance of 18,360 Mm in 928.806 days, at an inclination of 170° to the ecliptic, in a retrograde direction and with an eccentricity of 0.198. Mundilfari may have formed from debris knocked off Phoebe by large impacts at some point in the solar system's history.