---
title: orbitalAxis
framework: realitykit
role: symbol
role_heading: Instance Property
path: realitykit/orbitentityaction/orbitalaxis
---

# orbitalAxis

A vector that describes the axis of rotation (in world space).

## Declaration

```swift
var orbitalAxis: SIMD3<Float>
```

## Discussion

Discussion The default value of this property is [0, 1, 0], meaning the rotation occurs around the y-axis.