EPSG:3773 NAD27 / Alberta 3TM ref merid 117 W
Projected system (Transverse Mercator) in use: Canada - Alberta - 118.5°W to 115.5°W. The full definition below, and conversion in one click.
| Code | EPSG:3773 |
|---|---|
| Name | NAD27 / Alberta 3TM ref merid 117 W |
| Type | Projected system — Transverse Mercator |
| Area of use |
Canada - Alberta - 118.5°W to 115.5°W Canada - Alberta - between 118°30'W and 115°30' W. |
| Bounds | W -118,50° · S 50,77° · E -115,50° · N 60,00° |
| Countries | Canada |
| Datum | North American Datum 1927 |
| Ellipsoid | Clarke 1866 a = 6378206.4 m · 1/f = 294.978698214 |
| Base geographic system | EPSG:4267 — NAD27 |
| Unit | metre (E east, N north) |
| Transformation to WGS 84 | NAD27 to WGS 84 (13) (EPSG:1182) — accuracy 8 m |
| Scope | Cadastre, survey control and engineering survey in urban areas, typically in all municipalities that previously comprised the 73 Municipal Integrated Surveying and Mapping (MISAM) areas, also known as urban cadastral map areas. For rural areas use UTM. |
Projection parameters
| Parameter | Value | Unit |
|---|---|---|
| Latitude of natural origin | 0 | degree |
| Longitude of natural origin | -117 | degree |
| Scale factor at natural origin | 0.9999 | unity |
| False easting | 0 | metre |
| False northing | 0 | metre |
proj4 definition
+proj=tmerc +lat_0=0 +lon_0=-117 +k=0.9999 +x_0=0 +y_0=0 +a=6378206.4000000004 +rf=294.9786982139 +units=m +towgs84=4,159,188 +no_defsPaste it into QGIS, proj4js, PostGIS (spatial_ref_sys) or GDAL. +towgs84 carries the EPSG transformation to WGS 84; the official code stays EPSG:3773.
WKT (ESRI format, the .prj content)
PROJCS["NAD_1927_3TM_117",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",0.0],PARAMETER["False_Northing",0.0],PARAMETER["Central_Meridian",-117.0],PARAMETER["Scale_Factor",0.9999],PARAMETER["Latitude_Of_Origin",0.0],UNIT["Meter",1.0]]Other systems — Canada
- EPSG:3579NAD83(CSRS) / Yukon Albers
- EPSG:3580NAD83 / NWT Lambert
- EPSG:3581NAD83(CSRS) / NWT Lambert
- EPSG:3761NAD83(CSRS) / UTM zone 22N
- EPSG:3771NAD27 / Alberta 3TM ref merid 111 W
- EPSG:3772NAD27 / Alberta 3TM ref merid 114 W
- EPSG:3775NAD83 / Alberta 3TM ref merid 111 W
- EPSG:3776NAD83 / Alberta 3TM ref merid 114 W
- EPSG:3777NAD83 / Alberta 3TM ref merid 117 W
- EPSG:3779NAD83(CSRS) / Alberta 3TM ref merid 111 W
- EPSG:3780NAD83(CSRS) / Alberta 3TM ref merid 114 W
- EPSG:3781NAD83(CSRS) / Alberta 3TM ref merid 117 W
- EPSG:3797NAD27 / MTQ Lambert
- EPSG:3798NAD83 / MTQ Lambert
- EPSG:3799NAD83(CSRS) / MTQ Lambert
- EPSG:3800NAD27 / Alberta 3TM ref merid 120 W
- EPSG:3801NAD83 / Alberta 3TM ref merid 120 W
- EPSG:3802NAD83(CSRS) / Alberta 3TM ref merid 120 W
Source: EPSG registry v11.022 (IOGP), through the PROJ database. Always check a code on epsg.org before contractual work.