Planet"blackbody" temp reflectivity "real material" temp Observed average temp
Mercury107 C 0.12 165 C 425 (day) to -175 (night)
Venus5.3 C 0.75 -39 C 470 C
Earth-36 C 0.29 -14 C 15 C
Mars-81 C 0.16 -54 C -50 C