Azazel asteroid belt

The Azazel asteroid belt is an asteroid belt somewhere in space.

Animated cartoon
To hide the AllSpark from the Decepticons, the Autobots threw it through a space bridge to a random location. It ended up on an asteroid in the Azazel asteroid belt.

Four million years later, Optimus Prime's crew was repairing space bridge RA-678 when they discovered the AllSpark. Soon after, the Nemesis arrived, its Decepticon crew seeking the AllSpark. In the chaos, the AllSpark activated the space bridge, which transported the Autobot ship Orion to Earth.