What is the temperature of objects in Low Earth Orbit?
Consider LEO to be 600km to 800km.
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It depends which object. If the object is a human being in a spaceship, the temperature is approximately 37 °C. If the object is a spherical object that absorbs and re-emits the solar radiation, it's closer to -15 °C in average, like the Earth without the greenhouse effect, and maybe even lower because the solar radiation is shielded by the Earth much of the time. If it's totally shielded from solar radiation, it may acquired the temperature 2.7 K from the cosmic microwave background. Did you expect some universal temperature? Just to be sure, the atmosphere at those high altitudes is de facto non-existent, so this non-existent atmosphere doesn't enforce any unified "air temperature" over there.