Deysum III
this planet, located in the Trax Sector, served as the Imperial sector capital shortly after the Battle of Yavin. A huge naval installation was erected on the planet. At the time of the Battle of Yavin, Deysum III had been abused by corporations and urban sprawl, and much of the planet was covered with swamps of deadly chemicals and toxic waste. The inhabitants of the planet were forced to erect huge domes to cover their cities and keep out the toxic gases the built up over the centuries of misuse.