Doug Hamilton (Maryland)
Titan is arguably the Solar System’s most unusual satellite. It is fifty times more massive than Saturn’s other moons and is the only satellite with a substantial atmosphere. Titan shares a unique resonance with nearby Hyperion, but otherwise sits in a particularly large gap between Rhea and Iapetus. Titan has the largest eccentricity of all Saturn’s regular satellites and has a reasonably large orbital tilt; its distant neighbor Iapetus has an even more impressive eight degree free inclination. Hyperion itself is a mystery, with its unusual orbit, extremely low density and its unique surface covered with bizarre craters. None of these peculiarities are even partially understood. Until now!