# startRotation

> The initial rotation of particles when emitted. When using curves, this value acts as a scale on the curve.

## Definition

* **Type:** Property
* **Namespace:** [UnityEngine](/engine/6000.0/script-reference/unityengine.md)
* **Assembly:** UnityEngine.ParticleSystemModule

> **Warning:**
>
> **Deprecated.** startRotation property is deprecated. Use main.startRotation or main.startRotationMultiplier instead.

```csharp
public float startRotation { get; set; }
```

### Remarks

Note that the value should be given in radians.