Saturn’s moon Hyperion measures 410 x 260 x 220 km (254 x 161 x 136 miles) and is the largest highly irregularly shaped body in the Solar System. It is one of only two bodies in the Solar System discovered to have completely chaotic rotation, essentially randomly tumbling in its orbit around Saturn. The other is asteroid 4179 Toutatis, measuring 4.5 x 2.4 x 1.9 km (2.7 x 1.5 x 1.1 miles).