btm said:
Anyone know whether it’s got an RTG on board? None of the sources I looked at can tell me.
https://nssdc.gsfc.nasa.gov/nmc/spacecraft/display.action?id=1972-023A
Link
Spacecraft and Subsystems
The Cosmos 482 spacecraft comprised a carrier bus and lander probe with a total launch mass of 1184 kg. The lander probe was an insulated spherical pressure vessel with a mass of 495 kg, of similar design to the Venera 7 probe. It had a top shell that would be jettisoned on atmospheric entry to deploy the 2.5 square meter parachute and expose the antenna and instruments. The probe was battery powered. Its instrumentation included temperature, pressure, and density sensors as well as an accelerometer, radio altimeter, anemometer, gamma-ray spectrometer, gas analyzer, visible photometers, and radio transmitters. For more on the identical Venera 8 descent craft, see:
https://nssdc.gsfc.nasa.gov/nmc/spacecraft/display.action?id=1972-021D
Link