In real life, the Earth is 12,750 km and 510 million km2 and the Moon is 3,400 km and 37 million km2.
Theoretically how many km2 would planets like Ossus have with 29,000 km or moons like Endor which have 4,900 km?
I don’t know, but it sounds like you’ve done your homework on this 👍🏻
What do you think?