EPSG:21420 Beijing 1954 / Gauss-Kruger zone 20
Système projeté (Transverse Mercator) en usage : China - 114°E to 120°E onshore. La définition complète ci-dessous, et la conversion en un clic.
| Code | EPSG:21420 |
|---|---|
| Nom | Beijing 1954 / Gauss-Kruger zone 20 |
| Type | Système projeté — Transverse Mercator |
| Zone d'usage |
China - 114°E to 120°E onshore China - onshore between 114°E and 120°E. |
| Emprise | O 114,00° · S 22,14° · E 120,00° · N 51,52° |
| Pays | Chine |
| Datum | Beijing 1954 |
| Ellipsoïde | Krassowsky 1940 a = 6378245 m · 1/f = 298.3 |
| Système géographique de base | EPSG:4214 — Beijing 1954 |
| Unité | metre (X north, Y east) |
| Transformation vers WGS 84 | Beijing 1954 to WGS 84 (2) (EPSG:15919) — précision 15 m |
| Usage | Topographic mapping (medium scale). |
Paramètres de la projection
| Paramètre | Valeur | Unité |
|---|---|---|
| Latitude of natural origin | 0 | degree |
| Longitude of natural origin | 117 | degree |
| Scale factor at natural origin | 1 | unity |
| False easting | 20500000 | metre |
| False northing | 0 | metre |
Définition proj4
+proj=tmerc +lat_0=0 +lon_0=117 +k=1 +x_0=20500000 +y_0=0 +ellps=krass +units=m +towgs84=15.53,-113.82,-41.38,0,0,0.814,-0.38 +no_defsÀ coller dans QGIS, proj4js, PostGIS (spatial_ref_sys) ou GDAL. +towgs84 porte la transformation EPSG vers WGS 84 ; le code officiel reste EPSG:21420.
WKT (format ESRI, contenu du .prj)
PROJCS["Beijing_1954_GK_Zone_20",GEOGCS["GCS_Beijing_1954",DATUM["D_Beijing_1954",SPHEROID["Krasovsky_1940",6378245.0,298.3]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Gauss_Kruger"],PARAMETER["False_Easting",20500000.0],PARAMETER["False_Northing",0.0],PARAMETER["Central_Meridian",117.0],PARAMETER["Scale_Factor",1.0],PARAMETER["Latitude_Of_Origin",0.0],UNIT["Meter",1.0]]Autres systèmes — Chine
- EPSG:21413Beijing 1954 / Gauss-Kruger zone 13
- EPSG:21414Beijing 1954 / Gauss-Kruger zone 14
- EPSG:21415Beijing 1954 / Gauss-Kruger zone 15
- EPSG:21416Beijing 1954 / Gauss-Kruger zone 16
- EPSG:21417Beijing 1954 / Gauss-Kruger zone 17
- EPSG:21418Beijing 1954 / Gauss-Kruger zone 18
- EPSG:21419Beijing 1954 / Gauss-Kruger zone 19
- EPSG:21421Beijing 1954 / Gauss-Kruger zone 21
- EPSG:21422Beijing 1954 / Gauss-Kruger zone 22
- EPSG:21423Beijing 1954 / Gauss-Kruger zone 23
- EPSG:21453Beijing 1954 / Gauss-Kruger CM 75E
- EPSG:21454Beijing 1954 / Gauss-Kruger CM 81E
- EPSG:21455Beijing 1954 / Gauss-Kruger CM 87E
- EPSG:21456Beijing 1954 / Gauss-Kruger CM 93E
- EPSG:21457Beijing 1954 / Gauss-Kruger CM 99E
- EPSG:21458Beijing 1954 / Gauss-Kruger CM 105E
- EPSG:21459Beijing 1954 / Gauss-Kruger CM 111E
- EPSG:21460Beijing 1954 / Gauss-Kruger CM 117E
Source : registre EPSG v11.022 (IOGP), via la base PROJ. Vérifiez toujours un code sur epsg.org avant un travail contractuel.