New Zealand Geodetic Datum 2000 (NZGD2000) is the official geodetic datum used in New Zealand. It allows us to relate a 3-dimensional position to a consistent coordinate, in the format latitude (Φ), longitude (λ), and ellipsoidal height (H).
A geodetic datum is a reference system (or set of rules) that defines a how positions are represented. This includes:
- a coordinate system
- a reference ellipsoid
- additional models, if required, such as a deformation model.
Coordinate systems used in New Zealand
Reference ellipsoids
NZGD2000 Deformation Model
NZGD2000 was implemented in 1998, replacing the New Zealand Geodetic Datum 1949 (NZGD1949). NZGD2000 is defined in the Standard for New Zealand Geodetic Datum 2000 LINZS25000.
New Zealand Geodetic Datum 1949 (NZGD1949)
Standard for New Zealand Geodetic Datum 2000 - LINZS25000
Key parameters for NZGD2000
| Name | New Zealand Geodetic Datum 2000 |
|---|---|
| Abbreviation | NZGD2000 |
| Coverage area | New Zealand continental shelf area between 160°E –170°W and 25°S – 60°S. |
| EPSG code | 4167 |
| Coordinate system | Geographic |
| Reference frame | ITRF 1996 |
| Reference ellipsoid | GRS80 |
| Prime meridian | Greenwich |
| Deformation model | LINZ deformation model |
| Reference date | 1 January 2000 (epoch 2000.0) |