SGC (AGD66) to MGA94 (GDA94)
7-figure transformation parameters for transforming between ACT Standard Grid coordinates (based on AGD66) and MGA94 coordinates (based on GDA94) are available on request.
SGC (AGD66) to MGA2020 (GDA2020)
Spatial data managers will need to consider transforming their data to GDA2020, particularly for data in ACT Standard Grid. To transform from SGC (AGD66) to MGA2020 (GDA2020), apply the following 7-figure transformation parameters (EPSG Registry Code EPSG::9185).
| Parameter | Value | Unit |
|---|---|---|
| X axis Translation (tx) | -136.9703 | Metres (m) |
| Y axis Translation (ty) | -37.5638 | Metres (m) |
| Z axis Translation (tx) | 124.4242 | Metres (m) |
| X axis Rotation (rx) | -0.25676 | Arc-seconds |
| Y axis Rotation (ry) | -0.42966 | Arc-seconds |
| Z axis Rotation (rz) | -0.30077 | Arc-seconds |
| Scale (sc) | -4.61966 | Parts per million (ppm) |
For more information see Guideline 18 - Transforming to GDA2020 [4.8 MB] or email gda2020@act.gov.au.
MGA94 (GDA94) to MGA2020 (GDA2020)
To transform data from GDA94 to GDA2020 see the GDA Transformation products and tools on the ICSM website.
Note that spatial data may not necessarily need to be transformed. Where the data has lower spatial accuracy, it may already be compatible with GDA2020 as the shift from GDA94 to GDA2020 is approximately 1.5m in the ACT region.
