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Unit: metre
Data source: EPSG
Revision date: 1995-06-02
Remarks: Used for OSU91 gravity potential (geoidal) model.
Definition: OGC Well Known Text
SPHEROID["OSU91A",6378136.3,298.257223563, AUTHORITY["EPSG","7033"]]
Definition: OGC Well Known Text 2 (2019)
ELLIPSOID["OSU91A",6378136.3,298.257223563, LENGTHUNIT["metre",1], ID["EPSG",7033]]
Definition: ESRI Well Known Text
SPHEROID["OSU_91A",6378136.3,298.257223563]
Definition: JSON
{ "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json", "type": "Ellipsoid", "name": "OSU91A", "semi_major_axis": 6378136.3, "inverse_flattening": 298.257223563, "id": { "authority": "EPSG", "code": 7033 } }
Definition: GeoServer
7033-ellipsoid=SPHEROID["OSU91A",6378136.3,298.257223563,AUTHORITY["EPSG","7033"]]