This is a list of tumblers, minor planets, comets and natural satellites whose angular momentum vector is far from the principal axis of inertia, so that they do not rotate in a fairly constant manner with a constant period.
If two are equal, then the axis of rotation will simply precess in a circle.
As of 2018, there are 3 natural satellites and 198 confirmed or likely tumblers out of a total of nearly 800,000 discovered small Solar System bodies.
[2][3][a] The tumbling of a body can be caused by the torque from asymmetrically emitted radiation known as the YORP effect.
This is a list of tumbling natural satellites (moons) that orbit planets and dwarf planets in the Solar System.