If we set aside the question how the Apollo LM got into orbit around the celestial body in question, I wonder which celestial bodies other than the Moon the LM could successfully land on. Mercury for instance is very similar to the Moon, but it has more than twice its surface gravity. It would try to land on the night side of course, as it would probably melt on the dayside, but I wonder on the gravity/fuel part, if a crew would be able to brake the LM enough to make a soft landing.
I guess the LM would be able to perfectly land softly on the following bodies, other than the Moon:
- Ceres, Pallas and Vesta in the main asteroid belt
- Callisto and Ganymede, and without Jupiter's intense radiation belts on Europa safely too
- Io has a higher surface gravity than the Moon, but I guess the LM would do it as it proved more efficient than expected, but one has to take into account that Io has ioquakes, volcanism, and its surface changes permanently, so landing would be very difficult but not impossible (except it would, because of the radiation belts mentioned above)
- all the seven planetary moons of Saturn (including Titan if the LM is able to brake enough in time before entering the atmosphere at speeds that would damage it because of aerodynamic heating)
- all five Uranian planetary moons
- Neptune's moons Triton, Proteus and Nereid
- all dwarf planets beyond Neptune (afawk they have low gravities and little to no atmospheres)
- Mercury has a high gravity, so I wonder if the LM's fuel would suffice to brake it enough for a soft landing. Of course, the LM would be unable to leave again, even if it would get refueled on the surface I guess.
- If the LM is able to land on Mercury, I think it would also be able to do so on Mars in case it was able to brake enough before entering Mars' atmosphere at too high speeds, for aerodynamic friction not to burn it up)
The LM is definitely unable to softly land on Venus and the Earth (when coming from orbit), or safely enter the atmospheres of the gas giants, as these planets have too high masses.
Did I make a mistake above? Could the LM safely enter Titan's atmosphere or not? Would it be able to land on Mercury and Mars? Could it get off Mercury into orbit if fueled completely?