A small disc shaped earth Satellite, 1 m in diameter circles the earth at a distance of 300 km from the surface. The flat surface of the disc (with emissivity 0.3 and temperature (-) $$18^\circ C$$ is oriented tangential to the earth’s surface with view factor of 0.91. Average Earth temperature is $$~ 27^\circ C$$ while surrounding of satellite is 0 K. Net rate at which energy is leaving satellite is