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Method: Geocentric translations (geog2D domain)
Remarks: Derived at 6 stations. Accuracy 3m, 3m and 4m in X, Y and Z axes. Also used as a transformation from SAD69 to SIRGAS-Chile - see code 6970. Unlike IGM Chile, NGA extends use of this tfm to all Chile south of 44°S.
Information source: U.S. National Geospatial Intelligence Agency (NGA) Standard 0036 v1.0.0 of 2014-07-08.
Revision date: 2023-01-17
Unit: degree
Geodetic CRS: SAD69
Datum: South American Datum 1969
Ellipsoid: GRS 1967 Modified
Prime meridian: Greenwich
Data source: EPSG
Information source: OGP
Revision date: 2002-11-22
Scope: Geodesy.
Remarks: See CRS code 4618 for recommended coordinate axis representation for the human interface.
Area of use: Brazil - onshore and offshore. In rest of South America - onshore north of approximately 45°S and Tierra del Fuego.
Coordinate system: Ellipsoidal 2D CS. Axes: latitude, longitude. Orientations: north, east. UoM: dec deg
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