Covered in either n_e, f_i, or f_c I would think, depending on which of the three you're concerned that tides[1] or being tidally-locked would affect. [1] I me

Covered in either n_e, f_i, or f_c I would think, depending on which of the three you're concerned that tides[1] or being tidally-locked would affect. [1] I mention tides because there are hypotheses that the presence of luna greatly contributed to abiogenesis and/or the mechanism by which life first left the oceans.