Comment by spikels
11 hours ago
What temperature were you assuming?
Because the amount of energy radiated varies with the temperature to the fourth power (P=εσT^4).
Assuming very good emissivity (ε=0.95) and ~75C (~350K) operating temperature I get 808 W/m2.
They would most likely launch with TPUs designed for space and target lower temperatures, closer to 60C.