The Thirteen's starship was an immense golden, ovoid vessel. Built to transport the Thirteen original Transformers, and one of the their most powerful weapons. The bridge of the ship is huge, designed to accommodate the huge figures of the Thirteen. They were 3 times the size of modern Cybertronians.
At the ships center was stored the Requiem Blaster. The incredibly powerful weapon was stored in a special zero-gravity chamber. The bridge's main console had a special tracking component for the Blaster built in.
When the ship was deserted and the weapon left behind, the mass of it drew in junk from space and became the gravitaional center of Junkion.