Take the tour ×  Can someone send me pointers to work (either
theoretical or simulations) showing (in)stability of satellite
orbits around tidally locked exoplanets? I want to know firstly
if satellite orbits can survive the inward migration and
secondly if once the planet becomes tidally locked if that has
any implications for the orbits of its satellites - do they too
become tidally locked? How do the tidal interactions from the
star impact their orbits? In particular, I'm interested in what
happens to orbits of earth-sized moons around gas giants that
are in the HZ.  share|improve this question add comment  1
Answer  There is an effect of orbits often talked about with
Phobos, moon of Mars, called Tidal Deceleration. Basically, if
an object is orbiting quicker than the object around it is
orbiting, then it will end up falling into the planet
eventually. Any moon that could orbit the planet would have to
be orbiting it faster than the orbit of the sun. Therefor, it
must be in a state of Tidal Deceleration,