EPSG:1333

IGS20

Attributes

Ellipsoid: GRS 1980

Prime meridian: Greenwich

Data source: EPSG

Information source: International GNSS Service (IGS), "Upcoming switch to IGS20 / IGb20 / IGc20 reference frame", IGSMAIL-8238, 8282, 8543 and 8634. https://igs.org/

Revision date: 2026-06-17

Scope: Geodesy.

Remarks: Replaces IGb14. Compared to IGb14, IGS20 contains 98 new stations, mostly in previously sparsely covered areas, but with 25 IGb14 sites removed. For all practical purposes coincident with ITRF2020.

Area of use: World.

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WGS84 bounds:
179.9 -85.0
-179.9 85.0

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Definition: OGC Well Known Text

DATUM["IGS20",
    SPHEROID["GRS 1980",6378137,298.257222101,
        AUTHORITY["EPSG","7019"]],
    AUTHORITY["EPSG","1333"]]

Definition: OGC Well Known Text 2 (2019)

DYNAMIC[
    FRAMEEPOCH[2015]],
DATUM["IGS20",
    ELLIPSOID["GRS 1980",6378137,298.257222101,
        LENGTHUNIT["metre",1]],
    ID["EPSG",1333]]

Definition: ESRI Well Known Text

DATUM["IGS20",
    SPHEROID["GRS_1980",6378137.0,298.257222101]]

Definition: JSON

{
    "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json",
    "type": "DynamicGeodeticReferenceFrame",
    "name": "IGS20",
    "frame_reference_epoch": 2015,
    "ellipsoid": {
        "name": "GRS 1980",
        "semi_major_axis": 6378137,
        "inverse_flattening": 298.257222101
    },
    "scope": "Geodesy.",
    "area": "World.",
    "bbox": {
        "south_latitude": -90,
        "west_longitude": -180,
        "north_latitude": 90,
        "east_longitude": 180
    },
    "id": {
        "authority": "EPSG",
        "code": 1333
    }
}

Definition: GeoServer

1333-datum=DATUM["IGS20",SPHEROID["GRS 1980",6378137,298.257222101,AUTHORITY["EPSG","7019"]],AUTHORITY["EPSG","1333"]]