An orrery is a model of an astronomical system, such as a solar system. Mechanical orreries serve as reference models for how planets, moons, and stars move in relation to one another. Magical and technological orreries may model planes other than the Material Plane or serve as navigational or communication aids within or across planes.
- orrery of distant worlds: A minor magical artifact with communicative powers.
- Menetnashte's Orrery