EPSG:4134 — PSD93
PSD93 (EPSG:4134) — a Geographic (degrees) system on the a=6378249.145 datum, used in Oman. Parameters, proj4, WKT, accuracy ±0.1 m, plus a free converter to WGS84 and U…
At a glance
- EPSG
- 4134
- Name
- PSD93
- Kind
- Geographic (degrees)
- Family
- Geographic (longitude/latitude)
- Ellipsoid
- a=6378249.145
- Accuracy
- ±0.1 m (vs PROJ)
- Countries
- Oman
Area of use
| West | 51.99° |
| South | 16.59° |
| East | 59.91° |
| North | 26.58° |
Projection parameters
| Projection | longlat |
| Semi-major axis | 6378249.145 |
| Inverse flattening | 293.465 |
| Helmert shift to WGS84 | -180.624,-225.516,173.919,-0.81,-1.898,8.336,16.71006 |
+proj=longlat +a=6378249.145 +rf=293.465 +no_defs +towgs84=-180.624,-225.516,173.919,-0.81,-1.898,8.336,16.71006
GEOGCS["GCS_PSD93",DATUM["D_Custom_6378249.145",SPHEROID["Custom_6378249.145",6378249.145,293.465],TOWGS84[-180.624,-225.516,173.919,-0.81,-1.898,8.336,16.71006]],PRIMEM["Greenwich",0],UNIT["Degree",0.0174532925199433],AUTHORITY["EPSG","4134"]]
Sample conversion
Oman capital: WGS84 58.59220, 23.61390 → EPSG:4134 58.5892792, 23.6136556
Values are within ±0.1 m at the test point.
About the Geographic (longitude/latitude) family
PSD93 is a geographic coordinate system: positions are longitude and latitude in degrees on its reference ellipsoid, not metres on a plane. It is the datum layer that projected grids (UTM, national belts) are built upon.
Because it is unprojected, distances and areas cannot be measured directly from its degrees — convert to a metric projected system (or use a geodesic calculation) first. This page's converter does exactly that.
Related systems
- EPSG:3439 — PSD93 / UTM zone 39N
- EPSG:3440 — PSD93 / UTM zone 40N
- EPSG:4232 — Fahud
- EPSG:7373 — ONGD14
- EPSG:7374 — ONGD14 / UTM zone 39N
- EPSG:7375 — ONGD14 / UTM zone 40N
- EPSG:32639 — WGS 84 / UTM zone 39N
- EPSG:32640 — WGS 84 / UTM zone 40N
- EPSG:32641 — WGS 84 / UTM zone 41N
Useful links: Converter · Batch converter · File converter · Country page
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FAQ
- What is EPSG:4134?
- It is the coordinate system “PSD93”, a Geographic (degrees) system in the Geographic (longitude/latitude) family, identified worldwide by the code EPSG:4134.
- What datum does it use, and how accurate is it?
- It is based on the a=6378249.145 ellipsoid and it carries Helmert parameters to WGS84. The residual at the test point is about ±0.1 m versus PROJ; for centimetre work use a geodetic adjustment service.
- Where is this system used?
- It is used in Oman. This page shows its area of use as a coordinate rectangle above.
- How do I convert EPSG:4134 to WGS84?
- Use the free coordinate converter above (preloaded with this system) to convert to WGS84, UTM, or any other system, within a ±0.1 m residual.
You may also need: Arab-world coordinate converter · Surveying file format converter · Batch coordinate file converter