# ReferenceFrame

engine/Source/Core/ReferenceFrame.js 6
Constants for identifying well-known reference frames.

##### Properties:

Name | Type | Description
--- | --- | ---
`FIXED` | number | The fixed frame.
`INERTIAL` | number | The inertial frame.

### Members

#### static constant Cesium.ReferenceFrame.FIXED : number
engine/Source/Core/ReferenceFrame.js 13

The fixed frame.

#### static constant Cesium.ReferenceFrame.INERTIAL : number
engine/Source/Core/ReferenceFrame.js 21

The inertial frame.

Default Value: `1`

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