Bubble city

The 'bubble city was an enclosed city in the Yavin system. The Millennium Falcon] passed it on its way to Aduba-3.

Behind the scenes
The city was located further from the Yavin Prime than was Yavin 4. It was assumedly either a space station or else located on one of the moons of Yavin Prime which could not support life, since the city required a dome.

Appearances

 * Star Wars 7: New Worlds, New Perils