# arcSpeed

> In animated modes, this determines how quickly the particle emission position moves around the arc.

## Definition

* **Type:** Property
* **Namespace:** [UnityEngine](/engine/6000.6/script-reference/unityengine.md)
* **Assembly:** UnityEngine.ParticleSystemModule

```csharp
public ParticleSystem.MinMaxCurve arcSpeed { get; set; }
```

### Remarks

The value is specified in terms of the number of complete 360 degree rotations. A value of 2 would mean that the particle emission position rotated 2 full times per second. Additional Resources: [ParticleSystem.ShapeModule.arcMode](/engine/6000.6/script-reference/unityengine/particlesystem/shapemodule/arcmode.md), [ParticleSystemShapeMultiModeValue](/engine/6000.6/script-reference/unityengine/particlesystemshapemultimodevalue.md), [ParticleSystem.ShapeModule.shapeType](/engine/6000.6/script-reference/unityengine/particlesystem/shapemodule/shapetype.md).