Direction that establishes the zero value when projected into the orbit plane.
| Member | Value | Description |
|---|---|---|
| eAgEVACalcObjectReferenceDirectionReferenceSatellitePosition | 0 | Use the reference satellite position when projected into the orbit plane. |
| eAgEVACalcObjectReferenceDirectionSatellitePosition | 1 | Use the satellite position when projected into the orbit plane. |
| eAgEVACalcObjectReferenceDirectionReferenceSatelliteNadir | 2 | Use the reference satellite nadir (centric) when projected into the orbit plane. |
| eAgEVACalcObjectReferenceDirectionSatelliteNadir | 3 | Use the satellite nadir (centric) position when projected into the orbit plane. |





