Temperature Difference

[XenonAtmosphere]

So... I had Earth and an Earth analog (Same mass, albedo, and atmospheric mass) in orbit around each other, and in the Solar System. What confused me though, is that they had vastly different resting temperatures (approx. 15 C for Earth, and approx 60 C for the analog). Does anyone know why this is happening?

Notes: I made sure that the Earth+Analog pair were in Earth's normal orbit.
           Earth's climate sim was off.
           Tidal evolution and heating were off.

[Cryo]

bug? tidal heating ?

[DiamondMiner10]

So... I had Earth and an Earth analog (Same mass, albedo, and atmospheric mass) in orbit around each other, and in the Solar System. What confused me though, is that they had vastly different resting temperatures (approx. 15 C for Earth, and approx 60 C for the analog). Does anyone know why this is happening?

Notes: I made sure that the Earth+Analog pair were in Earth's normal orbit.
           Earth's climate sim was off.
           Tidal evolution and heating were off.

Maybe the other one became tidally locked to the Sun