So I made this. Excel file, which can calculate the amount of people you can fit in the Birch World around any black hole. For file check R5 comment : r/Stellaris
Stellaris guide: tips and tricks for beginners | PCGamesN
Stellaris | PC Mac Linux Steam Game | Fanatical
Stellaris Console Commands - Cheats and more in 2022 | WePC
Joc Stellaris Federations DLC Key Pentru Calculator la CEL.ro