EPSG:2804 NAD83(HARN) / Maryland
Système projeté (Lambert Conic Conformal (2SP)) en usage : USA - Maryland. La définition complète ci-dessous, et la conversion en un clic.
| Code | EPSG:2804 |
|---|---|
| Nom | NAD83(HARN) / Maryland |
| Type | Système projeté — Lambert Conic Conformal (2SP) |
| Zone d'usage |
USA - Maryland United States (USA) - Maryland - counties of Allegany; Anne Arundel; Baltimore; Calvert; Caroline; Carroll; Cecil; Charles; Dorchester; Frederick; Garrett; Harford; Howard; Kent; Montgomery; Prince Georges; Queen Annes; Somerset; St Marys; Talbot; Washington; Wicomico; Worcester. |
| Emprise | O -79,49° · S 37,97° · E -74,97° · N 39,73° |
| Pays | États-Unis |
| Datum | NAD83 (High Accuracy Reference Network) |
| Ellipsoïde | GRS 1980 a = 6378137 m · 1/f = 298.257222101 |
| Système géographique de base | EPSG:4152 — NAD83(HARN) |
| Unité | metre (X east, Y north) |
| Transformation vers WGS 84 | NAD83(HARN) to WGS 84 (3) (EPSG:1901) — précision 1 m |
| Usage | Engineering survey, topographic mapping. |
Paramètres de la projection
| Paramètre | Valeur | Unité |
|---|---|---|
| Latitude of false origin | 37.666666666666664 | degree |
| Longitude of false origin | -77 | degree |
| Latitude of 1st standard parallel | 39.45 | degree |
| Latitude of 2nd standard parallel | 38.3 | degree |
| Easting at false origin | 400000 | metre |
| Northing at false origin | 0 | metre |
Définition proj4
+proj=lcc +lat_0=37.6666666666667 +lon_0=-77 +lat_1=39.45 +lat_2=38.3 +x_0=400000 +y_0=0 +ellps=GRS80 +units=m +towgs84=-0.991,1.9072,0.5129,0.02579,0.00965,0.01166,0 +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:2804.
WKT (format ESRI, contenu du .prj)
PROJCS["NAD_1983_HARN_StatePlane_Maryland_FIPS_1900",GEOGCS["GCS_North_American_1983_HARN",DATUM["D_North_American_1983_HARN",SPHEROID["GRS_1980",6378137.0,298.257222101]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Lambert_Conformal_Conic"],PARAMETER["False_Easting",400000.0],PARAMETER["False_Northing",0.0],PARAMETER["Central_Meridian",-77.0],PARAMETER["Standard_Parallel_1",39.45],PARAMETER["Standard_Parallel_2",38.3],PARAMETER["Latitude_Of_Origin",37.6666666666667],UNIT["Meter",1.0]]Autres systèmes — États-Unis
- EPSG:2795NAD83(HARN) / Iowa South
- EPSG:2796NAD83(HARN) / Kansas North
- EPSG:2797NAD83(HARN) / Kansas South
- EPSG:2798NAD83(HARN) / Kentucky North
- EPSG:2799NAD83(HARN) / Kentucky South
- EPSG:2800NAD83(HARN) / Louisiana North
- EPSG:2801NAD83(HARN) / Louisiana South
- EPSG:2802NAD83(HARN) / Maine East
- EPSG:2803NAD83(HARN) / Maine West
- EPSG:2805NAD83(HARN) / Massachusetts Mainland
- EPSG:2806NAD83(HARN) / Massachusetts Island
- EPSG:2807NAD83(HARN) / Michigan North
- EPSG:2808NAD83(HARN) / Michigan Central
- EPSG:2809NAD83(HARN) / Michigan South
- EPSG:2810NAD83(HARN) / Minnesota North
- EPSG:2811NAD83(HARN) / Minnesota Central
- EPSG:2812NAD83(HARN) / Minnesota South
- EPSG:2813NAD83(HARN) / Mississippi East
Source : registre EPSG v11.022 (IOGP), via la base PROJ. Vérifiez toujours un code sur epsg.org avant un travail contractuel.