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Stable orbit?
Stability is an interesting concept - probably a philosophical problem.
I don't know of anything that is stable over all time frames.
The second law of thermodynamics is difficult to refute and has stood the test of time for several centuries.
The Hubble telescope for example is currently in a "stable" low earth orbit as we speak. But is it really? We know that the tiny frictional resistance caused by the tiny amount of particles and atoms present in that part of the thermosphere causes a tiny drag on the Hubble telescope as it orbits. It is slowing down and so it technically has a decaying orbit. If we don't anything about that decaying orbit, the Hubble will burn up in the atmosphere in 2024 and some of the debri will reach land (or water).
So without referring to a time frame or describing the entire picture, a stable orbit becomes meaningless.
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