Given a small solid body like a small asteroid or satellite and some initial slow spin, for example 1 rotation every hour.
If placed in a perfect vacuum with no external forces will this spin forever?
The classical solution (where we approximate the object with a rigid body) will conserve angular momentum.
Is this true even if we acknowledge that the object might over very long timescales be deformed due to internal gravity, loss of heat to the environment through radiation, or through radioactive decay?
Assume infinite time, don't let the lifetime of the universe be a constraint.
If it does slow down why? What is violating the conservation of angular momentum?
I have tried to read about this and am ending up with articles about beta decay and how spin relates to angular momentum but I am not sure this is the right track.
I also found this question
But this asks about modeling and I did not see the answer to my question among those answers.