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# center

A prim around which the affected objects orbit.

## Discussion

Assign this property a prim not contained by [affectedObjects](/documentation/USD/affectedobjects).

To reside at an arbitrary location in its parent’s coordinate space, a prim needs the translation component of a transform. Therefore, assign this property an [Xformable](https://openusd.org/docs/api/class_usd_geom_xformable.html) prim.

### Declaration

```other
rel center
```

---

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