Largest object chaotically rotating
Who
Hyperion
What
410/260/220 dimension(s)
Where
Not Applicable ()
When

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 a handful of bodies in the Solar System discovered to have completely chaotic rotation, essentially randomly tumbling in their orbits. The asteroid 4179 Toutatis, as well as Pluto’s moons Nix, Hydra, Kerberos and Styx, are also believed to rotate chaotically.


4179 Toutatis measures 4.5 x 2.4 x 1.9 km (2.7 x 1.5 x 1.1 miles).