metre
Engineering survey including Airport and Ruperts Wharf construction.
None
St Helena, Ascension and Tristan da Cunha - St Helena Island - onshore.
Data Source: EPSG v11.016 2024-08-31
Datum: St. Helena Tritan
Coordinate System: cartesian
Projection: St. Helena Local Grid (Tritan)
Geodetic CRS: St. Helena Tritan
PROJCRS["St. Helena Tritan / SHLG(Tritan)",
BASEGEOGCRS["St. Helena Tritan",
DATUM["St. Helena Tritan",
ELLIPSOID["WGS 84",6378137,298.257223563,
LENGTHUNIT["metre",1]]],
PRIMEM["Greenwich",0,
ANGLEUNIT["degree",0.0174532925199433]],
ID["EPSG",7881]],
CONVERSION["St. Helena Local Grid (Tritan)",
METHOD["Transverse Mercator",
ID["EPSG",9807]],
PARAMETER["Latitude of natural origin",-15.9666666666667,
ANGLEUNIT["degree",0.0174532925199433],
ID["EPSG",8801]],
PARAMETER["Longitude of natural origin",-5.71666666666667,
ANGLEUNIT["degree",0.0174532925199433],
ID["EPSG",8802]],
PARAMETER["Scale factor at natural origin",1,
SCALEUNIT["unity",1],
ID["EPSG",8805]],
PARAMETER["False easting",299483.737,
LENGTHUNIT["metre",1],
ID["EPSG",8806]],
PARAMETER["False northing",2000527.879,
LENGTHUNIT["metre",1],
ID["EPSG",8807]]],
CS[Cartesian,2],
AXIS["(E)",east,
ORDER[1],
LENGTHUNIT["metre",1]],
AXIS["(N)",north,
ORDER[2],
LENGTHUNIT["metre",1]],
USAGE[
SCOPE["Engineering survey including Airport and Ruperts Wharf construction."],
AREA["St Helena, Ascension and Tristan da Cunha - St Helena Island - onshore."],
BBOX[-16.08,-5.85,-15.85,-5.59]],
ID["EPSG",7882]]
{
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"type": "ProjectedCRS",
"name": "St. Helena Tritan / SHLG(Tritan)",
"base_crs": {
"name": "St. Helena Tritan",
"datum": {
"type": "GeodeticReferenceFrame",
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"ellipsoid": {
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"semi_major_axis": 6378137,
"inverse_flattening": 298.257223563
}
},
"coordinate_system": {
"subtype": "ellipsoidal",
"axis": [
{
"name": "Geodetic latitude",
"abbreviation": "Lat",
"direction": "north",
"unit": "degree"
},
{
"name": "Geodetic longitude",
"abbreviation": "Lon",
"direction": "east",
"unit": "degree"
}
]
},
"id": {
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"code": 7881
}
},
"conversion": {
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"method": {
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"id": {
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"code": 9807
}
},
"parameters": [
{
"name": "Latitude of natural origin",
"value": -15.9666666666667,
"unit": "degree",
"id": {
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"code": 8801
}
},
{
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"id": {
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}
},
{
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"id": {
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}
},
{
"name": "False easting",
"value": 299483.737,
"unit": "metre",
"id": {
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"code": 8806
}
},
{
"name": "False northing",
"value": 2000527.879,
"unit": "metre",
"id": {
"authority": "EPSG",
"code": 8807
}
}
]
},
"coordinate_system": {
"subtype": "Cartesian",
"axis": [
{
"name": "Easting",
"abbreviation": "E",
"direction": "east",
"unit": "metre"
},
{
"name": "Northing",
"abbreviation": "N",
"direction": "north",
"unit": "metre"
}
]
},
"scope": "Engineering survey including Airport and Ruperts Wharf construction.",
"area": "St Helena, Ascension and Tristan da Cunha - St Helena Island - onshore.",
"bbox": {
"south_latitude": -16.08,
"west_longitude": -5.85,
"north_latitude": -15.85,
"east_longitude": -5.59
},
"id": {
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}
}
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'longitude_of_central_meridian': -5.716666666666667,
'longitude_of_prime_meridian': 0.0,
'prime_meridian_name': 'Greenwich',
'projected_crs_name': 'St. Helena Tritan / SHLG(Tritan)',
'reference_ellipsoid_name': 'WGS 84',
'scale_factor_at_central_meridian': 1.0,
'semi_major_axis': 6378137.0,
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