EPSG:26971 NAD83 / Illinois East
Projected system (Transverse Mercator) in use: USA - Illinois - SPCS - E. The full definition below, and conversion in one click.
| Code | EPSG:26971 |
|---|---|
| Name | NAD83 / Illinois East |
| Type | Projected system — Transverse Mercator |
| Area of use |
USA - Illinois - SPCS - E United States (USA) - Illinois - counties of Boone; Champaign; Clark; Clay; Coles; Cook; Crawford; Cumberland; De Kalb; De Witt; Douglas; Du Page; Edgar; Edwards; Effingham; Fayette; Ford; Franklin; Gallatin; Grundy; Hamilton; Hardin; Iroquois; Jasper; Jefferson; Johnson; Kane; Kankakee; Kendall; La Salle; Lake; Lawrence; Livingston; Macon; Marion; Massac; McHenry; McLean; Moultrie; Piatt; Pope; Richland; Saline; Shelby; Vermilion; Wabash; Wayne; White; Will; Williamson. |
| Bounds | W -89,27° · S 37,06° · E -87,02° · N 42,50° |
| Countries | United States |
| Datum | North American Datum 1983 |
| Ellipsoid | GRS 1980 a = 6378137 m · 1/f = 298.257222101 |
| Base geographic system | EPSG:4269 — NAD83 |
| Unit | metre (X east, Y north) |
| Transformation to WGS 84 | NAD83 to WGS 84 (1) (EPSG:1188) — accuracy 4 m |
| Scope | Engineering survey, topographic mapping. |
Projection parameters
| Parameter | Value | Unit |
|---|---|---|
| Latitude of natural origin | 36.666666666666664 | degree |
| Longitude of natural origin | -88.33333333333333 | degree |
| Scale factor at natural origin | 0.999975 | unity |
| False easting | 300000 | metre |
| False northing | 0 | metre |
proj4 definition
+proj=tmerc +lat_0=36.6666666666667 +lon_0=-88.3333333333333 +k=0.999975 +x_0=300000 +y_0=0 +a=6378137 +rf=298.257222101 +units=m +towgs84=0,0,0 +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:26971.
WKT (ESRI format, the .prj content)
PROJCS["NAD_1983_StatePlane_Illinois_East_FIPS_1201",GEOGCS["GCS_North_American_1983",DATUM["D_North_American_1983",SPHEROID["GRS_1980",6378137.0,298.257222101]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Transverse_Mercator"],PARAMETER["False_Easting",300000.0],PARAMETER["False_Northing",0.0],PARAMETER["Central_Meridian",-88.3333333333333],PARAMETER["Scale_Factor",0.999975],PARAMETER["Latitude_Of_Origin",36.6666666666667],UNIT["Meter",1.0]]Other systems — United States
- EPSG:26961NAD83 / Hawaii zone 1
- EPSG:26962NAD83 / Hawaii zone 2
- EPSG:26963NAD83 / Hawaii zone 3
- EPSG:26964NAD83 / Hawaii zone 4
- EPSG:26965NAD83 / Hawaii zone 5
- EPSG:26966NAD83 / Georgia East
- EPSG:26967NAD83 / Georgia West
- EPSG:26968NAD83 / Idaho East
- EPSG:26969NAD83 / Idaho Central
- EPSG:26970NAD83 / Idaho West
- EPSG:26972NAD83 / Illinois West
- EPSG:26973NAD83 / Indiana East
- EPSG:26974NAD83 / Indiana West
- EPSG:26975NAD83 / Iowa North
- EPSG:26976NAD83 / Iowa South
- EPSG:26977NAD83 / Kansas North
- EPSG:26978NAD83 / Kansas South
- EPSG:26980NAD83 / Kentucky South
Source: EPSG registry v11.022 (IOGP), through the PROJ database. Always check a code on epsg.org before contractual work.