EPSG:1425

OSNet v2009

Attributes

Ellipsoid: GRS 1980

Prime meridian: Greenwich

Data source: EPSG

Information source: Ordnance Survey of Great Britain (OS); https://www.ordnancesurvey.co.uk

Revision date: 2025-10-17

Scope: Geodesy. Active GNSS network / Continuously Operating Reference Station (CORS) network.

Remarks: Aligned to the EUREF IE/UK 2009 realization of ETRS89. OSNet v2009 is the second realization of ETRS89 in Great Britain. Replaced OSNet v2001 in 2016.

Area of use: United Kingdom (UK) - Great Britain - England and Wales onshore, Scotland onshore and Western Isles nearshore including Sea of the Hebrides and The Minch; Isle of Man onshore.

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WGS84 bounds:
1.92 49.79
-8.82 60.94

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Definition: OGC Well Known Text

DATUM["OSNet_v2009",
    SPHEROID["GRS 1980",6378137,298.257222101,
        AUTHORITY["EPSG","7019"]],
    AUTHORITY["EPSG","1425"]]

Definition: OGC Well Known Text 2 (2019)

DATUM["OSNet v2009",
    ELLIPSOID["GRS 1980",6378137,298.257222101,
        LENGTHUNIT["metre",1]],
    ANCHOREPOCH[2009.756],
    ID["EPSG",1425]]

Definition: ESRI Well Known Text

DATUM["D_ETRS_1989",
    SPHEROID["GRS_1980",6378137.0,298.257222101]]

Definition: JSON

{
    "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json",
    "type": "GeodeticReferenceFrame",
    "name": "OSNet v2009",
    "anchor_epoch": 2009.756,
    "ellipsoid": {
        "name": "GRS 1980",
        "semi_major_axis": 6378137,
        "inverse_flattening": 298.257222101
    },
    "scope": "Geodesy. Active GNSS network / Continuously Operating Reference Station (CORS) network.",
    "area": "United Kingdom (UK) - Great Britain - England and Wales onshore, Scotland onshore and Western Isles nearshore including Sea of the Hebrides and The Minch; Isle of Man onshore.",
    "bbox": {
        "south_latitude": 49.79,
        "west_longitude": -8.82,
        "north_latitude": 60.94,
        "east_longitude": 1.92
    },
    "id": {
        "authority": "EPSG",
        "code": 1425
    }
}

Definition: GeoServer

1425-datum=DATUM["OSNet_v2009",SPHEROID["GRS 1980",6378137,298.257222101,AUTHORITY["EPSG","7019"]],AUTHORITY["EPSG","1425"]]