Orbits Mars. Of the two natural satellites of Mars, it is the large one. A dock city is there. Nero's father was besieged in Agea after his fleet of star ships were destroyed and captured at Phobos.
Phobos means fear. In myth, he was the offspring of Aphrodite and Ares, the child of love and war. It’s a fitting name for the larger of Mars’ moons. Phobos was formed long before the age of man, when a meteorite struck father Mars and flung debris into orbit. There it floated like a castoff corpse, dead and abandoned for a billion years. Now it teems with the parasitic life that pumps blood into the veins of the Gold empire. Swarms of tiny fat-bodied cargo ships rise from Mars’ surface to funnel into the two huge docks that encircle the moon. There, they transfer the bounty of Mars to the kilometer-long Cosmos Haulers that will bear the treasure along the great Julii-Agos trade routes to the Outer Worlds or, more likely, towards Sol, where hungry Luna and the Core worlds wait to be fed.