Ellipsoid: GRS 1980
Prime meridian: Greenwich
Data source: EPSG
Information source: SIRGAS Final Report, IBGE 1997.
Revision date: 2018-05-29
Scope: Geodesy.
Remarks: Realized by a frame of 58 stations observed in 1995 and adjusted in ITRF94. Provisional NIMA adjustment reference epoch was 1995.42 but final report accepted value is 1995.40. Replaced by SIRGAS 2000.
Area of use: South America - onshore and offshore. Ecuador (mainland and Galapagos) - onshore and offshore.
WGS84 bounds:
-26.0 -59.87
-113.21 16.75
Definition: OGC Well Known Text
DATUM["Sistema_de_Referencia_Geocentrico_para_America_del_Sur_1995", SPHEROID["GRS 1980",6378137,298.257222101, AUTHORITY["EPSG","7019"]], AUTHORITY["EPSG","6170"]]
Definition: OGC Well Known Text 2 (2019)
DATUM["Sistema de Referencia Geocentrico para America del Sur 1995", ELLIPSOID["GRS 1980",6378137,298.257222101, LENGTHUNIT["metre",1]], ID["EPSG",6170]]
Definition: ESRI Well Known Text
DATUM["D_SIRGAS", SPHEROID["GRS_1980",6378137.0,298.257222101]]
Definition: JSON
{ "$schema": "https://proj.org/schemas/v0.5/projjson.schema.json", "type": "GeodeticReferenceFrame", "name": "Sistema de Referencia Geocentrico para America del Sur 1995", "ellipsoid": { "name": "GRS 1980", "semi_major_axis": 6378137, "inverse_flattening": 298.257222101 }, "scope": "Geodesy.", "area": "South America - onshore and offshore. Ecuador (mainland and Galapagos) - onshore and offshore.", "bbox": { "south_latitude": -59.87, "west_longitude": -113.21, "north_latitude": 16.75, "east_longitude": -26 }, "id": { "authority": "EPSG", "code": 6170 } }