degree
Geodesy, topographic mapping.
None
St Helena, Ascension and Tristan da Cunha - St Helena Island - onshore.
Data Source: EPSG v11.016 2024-08-31
Datum: Astro DOS 71
Coordinate System: ellipsoidal
Projection: Undefined
Geodetic CRS: Undefined
GEOGCRS["Astro DOS 71",
DATUM["Astro DOS 71",
ELLIPSOID["International 1924",6378388,297,
LENGTHUNIT["metre",1]]],
PRIMEM["Greenwich",0,
ANGLEUNIT["degree",0.0174532925199433]],
CS[ellipsoidal,2],
AXIS["geodetic latitude (Lat)",north,
ORDER[1],
ANGLEUNIT["degree",0.0174532925199433]],
AXIS["geodetic longitude (Lon)",east,
ORDER[2],
ANGLEUNIT["degree",0.0174532925199433]],
USAGE[
SCOPE["Geodesy, topographic mapping."],
AREA["St Helena, Ascension and Tristan da Cunha - St Helena Island - onshore."],
BBOX[-16.08,-5.85,-15.85,-5.59]],
ID["EPSG",4710]]
{
"$schema": "https://proj.org/schemas/v0.7/projjson.schema.json",
"type": "GeographicCRS",
"name": "Astro DOS 71",
"datum": {
"type": "GeodeticReferenceFrame",
"name": "Astro DOS 71",
"ellipsoid": {
"name": "International 1924",
"semi_major_axis": 6378388,
"inverse_flattening": 297
}
},
"coordinate_system": {
"subtype": "ellipsoidal",
"axis": [
{
"name": "Geodetic latitude",
"abbreviation": "Lat",
"direction": "north",
"unit": "degree"
},
{
"name": "Geodetic longitude",
"abbreviation": "Lon",
"direction": "east",
"unit": "degree"
}
]
},
"scope": "Geodesy, topographic mapping.",
"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": {
"authority": "EPSG",
"code": 4710
}
}
{'crs_wkt': 'GEOGCRS["Astro DOS 71",DATUM["Astro DOS '
'71",ELLIPSOID["International '
'1924",6378388,297,LENGTHUNIT["metre",1]]],PRIMEM["Greenwich",0,ANGLEUNIT["degree",0.0174532925199433]],CS[ellipsoidal,2],AXIS["geodetic '
'latitude '
'(Lat)",north,ORDER[1],ANGLEUNIT["degree",0.0174532925199433]],AXIS["geodetic '
'longitude '
'(Lon)",east,ORDER[2],ANGLEUNIT["degree",0.0174532925199433]],USAGE[SCOPE["Geodesy, '
'topographic mapping."],AREA["St Helena, Ascension and Tristan da '
'Cunha - St Helena Island - '
'onshore."],BBOX[-16.08,-5.85,-15.85,-5.59]],ID["EPSG",4710]]',
'geographic_crs_name': 'Astro DOS 71',
'grid_mapping_name': 'latitude_longitude',
'horizontal_datum_name': 'Astro DOS 71',
'inverse_flattening': 297.0,
'longitude_of_prime_meridian': 0.0,
'prime_meridian_name': 'Greenwich',
'reference_ellipsoid_name': 'International 1924',
'semi_major_axis': 6378388.0,
'semi_minor_axis': 6356911.9461279465}