EPSG:26738 NAD27 / Alaska zone 8
Système projeté (Transverse Mercator) en usage : USA - Alaska - north of 54.5°N; 168°W to 164°W. La définition complète ci-dessous, et la conversion en un clic.
| Code | EPSG:26738 |
|---|---|
| Nom | NAD27 / Alaska zone 8 |
| Type | Système projeté — Transverse Mercator |
| Zone d'usage |
USA - Alaska - north of 54.5°N; 168°W to 164°W United States (USA) - Alaska onshore north of 54°30'N and between 168°W and 164°W. |
| Emprise | O -168,26° · S 54,34° · E -164,00° · N 69,05° |
| Pays | États-Unis |
| Datum | North American Datum 1927 |
| Ellipsoïde | Clarke 1866 a = 6378206.4 m · 1/f = 294.978698214 |
| Système géographique de base | EPSG:4267 — NAD27 |
| Unité | US survey foot (X east, Y north) |
| Transformation vers WGS 84 | NAD27 to WGS 84 (7) (EPSG:1176) — précision 12 m |
| Usage | Engineering survey, topographic mapping. |
Paramètres de la projection
| Paramètre | Valeur | Unité |
|---|---|---|
| Latitude of natural origin | 54 | degree |
| Longitude of natural origin | -166 | degree |
| Scale factor at natural origin | 0.9999 | unity |
| False easting | 500000 | US survey foot |
| False northing | 0 | US survey foot |
Définition proj4
+proj=tmerc +lat_0=54 +lon_0=-166 +k=0.9999 +x_0=152400.30480061 +y_0=0 +a=6378206.4000000004 +rf=294.9786982139 +units=us-ft +towgs84=-5,135,172 +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:26738.
WKT (format ESRI, contenu du .prj)
PROJCS["NAD_1927_StatePlane_Alaska_8_FIPS_5008",GEOGCS["GCS_North_American_1927",DATUM["D_North_American_1927",SPHEROID["Clarke_1866",6378206.4,294.978698213898]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Transverse_Mercator"],PARAMETER["False_Easting",500000.0],PARAMETER["False_Northing",0.0],PARAMETER["Central_Meridian",-166.0],PARAMETER["Scale_Factor",0.9999],PARAMETER["Latitude_Of_Origin",54.0],UNIT["US survey foot",0.304800609601219]]Autres systèmes — États-Unis
- EPSG:26729NAD27 / Alabama East
- EPSG:26730NAD27 / Alabama West
- EPSG:26731NAD27 / Alaska zone 1
- EPSG:26732NAD27 / Alaska zone 2
- EPSG:26733NAD27 / Alaska zone 3
- EPSG:26734NAD27 / Alaska zone 4
- EPSG:26735NAD27 / Alaska zone 5
- EPSG:26736NAD27 / Alaska zone 6
- EPSG:26737NAD27 / Alaska zone 7
- EPSG:26739NAD27 / Alaska zone 9
- EPSG:26740NAD27 / Alaska zone 10
- EPSG:26741NAD27 / California zone I
- EPSG:26742NAD27 / California zone II
- EPSG:26743NAD27 / California zone III
- EPSG:26744NAD27 / California zone IV
- EPSG:26745NAD27 / California zone V
- EPSG:26746NAD27 / California zone VI
- EPSG:26748NAD27 / Arizona East
Source : registre EPSG v11.022 (IOGP), via la base PROJ. Vérifiez toujours un code sur epsg.org avant un travail contractuel.