I found some planemos with tidally heated moons that are so hot that they illuminate the surrounding system. However, the lighting is weird - they emit light but they don't actually seem to glow. They'll reflect the light cast from nearby super-heated "incandescent" worlds though (while not glowing themselves) and the light they cast seems to have a distance limit related to temperature, beyond which it disappears abruptly. Thus satellites in other orbits around the planemo will only be illuminated while within the lighting range of the incandescent moon - or if the moon is close enough to the primary then that will be illuminated but if it's too far then it won't be.
Is this how it's supposed to behave or is there something not right here?
If you want to see some examples of this:https://imgur.com/jutb2IG
(the two incandescent primaries are the pair of worlds on the right in the sky. They're two terrestrial worlds orbiting eachother so closely that they're heating eachother to 900°C or more).https://imgur.com/L97ovdT
(the 'incandescent' moon is the dark object to the right of the gas giant primary).
I also spent most of this stream exploring them: https://www.twitch.tv/videos/219422229