EPSG:7881 — St. Helena Tritan

Geographic 2D · St Helena - St Helena Island

Export Formats

OGC WKT

GEOGCS[
    "St. Helena Tritan",
    DATUM[
        "St_Helena_Tritan",
        SPHEROID["WGS 84",6378137,298.257223563,AUTHORITY["EPSG","7030"]],
        AUTHORITY["EPSG","1173"]
    ],
    PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],
    UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],
    AUTHORITY["EPSG","7881"]
]

WKT2

GEOGCRS[
    "St. Helena Tritan",
    DATUM[
        "St. Helena Tritan",
        ELLIPSOID[
            "WGS 84",
            6378137,
            298.257223563,
            LENGTHUNIT["metre",1,ID["EPSG",9001]],
            ID["EPSG",7030]
        ],
        ID["EPSG",1173]
    ],
    CS[ellipsoidal,2,ID["EPSG",6422]],
    AXIS["Geodetic latitude (Lat)",north],
    AXIS["Geodetic longitude (Lon)",east],
    ANGLEUNIT["degree",0.0174532925199433,ID["EPSG",9102]],
    ID["EPSG",7881]
]

PROJ.4

+proj=longlat +ellps=WGS84 +no_defs +type=crs

Proj4js

How to add a projection to Proj4js? →

proj4.defs("EPSG:7881", "+proj=longlat +ellps=WGS84 +no_defs +type=crs");

JSON

{
  "type": "CoordinateReferenceSystem",
  "code": 7881,
  "name": "St. Helena Tritan",
  "kind": "geographic 2D",
  "area": "St Helena - St Helena Island",
  "unit": "degree (supplier to define representation)",
  "bbox": [
    -16.08,
    -5.85,
    -15.85,
    -5.59
  ],
  "proj4": "+proj=longlat +ellps=WGS84 +no_defs +type=crs"
}

PostGIS

How to add a projection to PostGIS? →

INSERT INTO spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext)
VALUES (7881, 'EPSG', 7881, '+proj=longlat +ellps=WGS84 +no_defs +type=crs', 'GEOGCS["St. Helena Tritan",DATUM["St_Helena_Tritan",SPHEROID["WGS 84",6378137,298.257223563,AUTHORITY["EPSG","7030"]],AUTHORITY["EPSG","1173"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","7881"]]');

MapServer

How to add a projection to MapServer? →

PROJECTION
  "+proj=longlat"
  "+ellps=WGS84"
  "+no_defs"
  "+type=crs"
END

GeoServer

How to add a projection to GeoServer? →

7881=GEOGCS["St. Helena Tritan",DATUM["St_Helena_Tritan",SPHEROID["WGS 84",6378137,298.257223563,AUTHORITY["EPSG","7030"]],AUTHORITY["EPSG","1173"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","7881"]]

Related Coordinate Systems

Available Transformations (2)

Transformation	Source → Target	Accuracy (m)
St. Helena Tritan to SHGD2015 (1)	7881 → 7886	0.05
St. Helena Tritan to WGS 84 (1)	7881 → 4326	1

Other CRS using St. Helena Tritan

Frequently Asked Questions

How do I add EPSG:7881 to GeoServer?

Add the following definition to your GeoServer configuration:

7881=GEOGCS["St. Helena Tritan",DATUM["St_Helena_Tritan",SPHEROID["WGS 84",6378137,298.257223563,AUTHORITY["EPSG","7030"]],AUTHORITY["EPSG","1173"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","7881"]]

Read the full GeoServer guide →

How do I add EPSG:7881 to PostGIS?

Add the following definition to your PostGIS configuration:

INSERT INTO spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext)
VALUES (7881, 'EPSG', 7881, '+proj=longlat +ellps=WGS84 +no_defs +type=crs', 'GEOGCS["St. Helena Tritan",DATUM["St_Helena_Tritan",SPHEROID["WGS 84",6378137,298.257223563,AUTHORITY["EPSG","7030"]],AUTHORITY["EPSG","1173"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","7881"]]');

Read the full PostGIS guide →

How do I add EPSG:7881 to MapServer?

Add the following definition to your MapServer configuration:

PROJECTION
  "+proj=longlat"
  "+ellps=WGS84"
  "+no_defs"
  "+type=crs"
END

Read the full MapServer guide →

How do I use EPSG:7881 with Proj4js?

Add the following definition to your Proj4js configuration:

proj4.defs("EPSG:7881", "+proj=longlat +ellps=WGS84 +no_defs +type=crs");

Read the full Proj4js guide →