6. (25 pts) Long-range sensors have detected a cylindrical planet orbiting around a star. The vertical rotation axis is ;_i:'_'f_ gt perpendicular to the orbital plane of the planet. The height of the cylinder is the same as the diameter of the flat, circular . " ends. . & Mo starlight illuminates the flat ends, but all surfaces of the A T cylinder emit infrared radiation evenly to space (on average). h =D = 7000 km - What is the equivalent blackbody surface temperature of this \"golar\" constant = 1500 Wim 2 planet, assuming it and the star are blackbodies? albedo = 25%