Proxima Centauri b

[radtech497]

Proxima b experiences less than one-third the tidal force acting on Mercury, so a spin-orbit resonance may be more likely; if that is indeed the case, might a 5:2 resonance be more probable than a 3:2 resonance? I realize a 5:2 resonance would give a day of only 107.3856 hours, as opposed to one of 178.976 hours for the 3:2 case, though I suppose it might come down to the orbital eccentricity one chose to go with (an editorial decision, at least until more data comes in).

Radtech497