What is the name of the asteroid field creature that the Falcon hides inside?

The story behind the answer

In The Empire Strikes Back, the Falcon ducks into what seems like a cave that’s actually a gigantic, asteroid‑dwelling slug—perfectly at home in the Hoth system’s asteroid field. That sets it apart from the Dianoga (a trash-compactor lurker on the Death Star), the Sarlacc (a stationary pit on Tatooine), and the Krayt dragon (a land-based desert predator).

These titans can grow kilometers long and hollow out asteroids, creating a tenuous atmosphere inside. Their maws often harbor mynocks, which clue Han’s crew that something’s off. Realizing the “cave” is alive only when the floor heaves and teeth loom, they blast free—one of the saga’s classic creature reveals.