EPSG:4777 New Beijing / 3-degree Gauss-Kruger zone 41
Système projeté (Transverse Mercator) en usage : China - 121.5°E to 124.5°E onshore. La définition complète ci-dessous, et la conversion en un clic.
EPSG ne publie pas de transformation simple vers WGS 84 pour ce datum : la conversion se fait sur l'ellipsoïde seul et peut s'écarter de plusieurs dizaines de mètres.
| Code | EPSG:4777 |
|---|---|
| Nom | New Beijing / 3-degree Gauss-Kruger zone 41 |
| Type | Système projeté — Transverse Mercator |
| Zone d'usage |
China - 121.5°E to 124.5°E onshore China - onshore between 121°30'E and 124°30'E. |
| Emprise | O 121,50° · S 28,22° · E 124,50° · N 53,56° |
| Pays | Chine |
| Datum | New Beijing |
| Ellipsoïde | Krassowsky 1940 a = 6378245 m · 1/f = 298.3 |
| Système géographique de base | EPSG:4555 — New Beijing |
| Unité | metre (X north, Y east) |
| Transformation vers WGS 84 | Aucune transformation simple publiée (ellipsoïde seul) |
| Usage | Cadastre, engineering survey, topographic mapping (large scale). |
Paramètres de la projection
| Paramètre | Valeur | Unité |
|---|---|---|
| Latitude of natural origin | 0 | degree |
| Longitude of natural origin | 123 | degree |
| Scale factor at natural origin | 1 | unity |
| False easting | 41500000 | metre |
| False northing | 0 | metre |
Définition proj4
+proj=tmerc +lat_0=0 +lon_0=123 +k=1 +x_0=41500000 +y_0=0 +ellps=krass +units=m +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:4777.
WKT (format ESRI, contenu du .prj)
PROJCS["New_Beijing_3_Degree_Gauss_Kruger_Zone_41",GEOGCS["GCS_New_Beijing",DATUM["D_New_Beijing",SPHEROID["Krasovsky_1940",6378245.0,298.3]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Gauss_Kruger"],PARAMETER["False_Easting",41500000.0],PARAMETER["False_Northing",0.0],PARAMETER["Central_Meridian",123.0],PARAMETER["Scale_Factor",1.0],PARAMETER["Latitude_Of_Origin",0.0],UNIT["Meter",1.0]]Autres systèmes — Chine
- EPSG:4768New Beijing / 3-degree Gauss-Kruger zone 32
- EPSG:4769New Beijing / 3-degree Gauss-Kruger zone 33
- EPSG:4770New Beijing / 3-degree Gauss-Kruger zone 34
- EPSG:4771New Beijing / 3-degree Gauss-Kruger zone 35
- EPSG:4772New Beijing / 3-degree Gauss-Kruger zone 36
- EPSG:4773New Beijing / 3-degree Gauss-Kruger zone 37
- EPSG:4774New Beijing / 3-degree Gauss-Kruger zone 38
- EPSG:4775New Beijing / 3-degree Gauss-Kruger zone 39
- EPSG:4776New Beijing / 3-degree Gauss-Kruger zone 40
- EPSG:4778New Beijing / 3-degree Gauss-Kruger zone 42
- EPSG:4779New Beijing / 3-degree Gauss-Kruger zone 43
- EPSG:4780New Beijing / 3-degree Gauss-Kruger zone 44
- EPSG:4781New Beijing / 3-degree Gauss-Kruger zone 45
- EPSG:4782New Beijing / 3-degree Gauss-Kruger CM 75E
- EPSG:4783New Beijing / 3-degree Gauss-Kruger CM 78E
- EPSG:4784New Beijing / 3-degree Gauss-Kruger CM 81E
- EPSG:4785New Beijing / 3-degree Gauss-Kruger CM 84E
- EPSG:4786New Beijing / 3-degree Gauss-Kruger CM 87E
Source : registre EPSG v11.022 (IOGP), via la base PROJ. Vérifiez toujours un code sur epsg.org avant un travail contractuel.