Phobos, the innermost moon of Mars, is in a decaying orbit which will either crash into Mars or break up in a few million years. It is a very valuable staging port in my universe, due to its vast quantities of subsurface ice and large underground voids, inside which a large base has been built. Therefore, the world governments have commissioned a study into how to stabilize its orbit.
Problem: Phobos is absolutely massive. Approximately 10E15 kg, in fact. There doesn’t seem to be a viable way to move all that stably, unless non-rocket propulsion is considered.
It just so happens that Phobos may have such an option. To facilitate transfer of massive payloads to and from Mars, it has had a tether system similar to this one installed on it. My question is, therefore:
Could using this tether system provide sufficient orbital momentum to counteract Phobos’s orbital decay? If not, what other options would be available?
Any and all answers would be helpful and appreciated. Thank you!