EPSG
Clifford Mugnier's PE&RS July 1999 Grids and Datums article on The Republic of Panama, (www.asprs.org/resources/grids/).
2011-03-26
Engineering survey, topographic mapping.
Reports of the existence of an Ancon datum are probably erroneous, considering that the origin of the Panamá-Colón Datum of 1911 is at Balboa Hill and the access road up the hill is from the town of Ancon, Canal Zone.
Definition: JSON
{ "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json", "type": "GeodeticReferenceFrame", "name": "Panama-Colon 1911", "ellipsoid": { "name": "Clarke 1866", "semi_major_axis": 6378206.4, "semi_minor_axis": 6356583.8 }, "scope": "Engineering survey, topographic mapping.", "area": "Panama - onshore.", "bbox": { "south_latitude": 7.15, "west_longitude": -83.04, "north_latitude": 9.68, "east_longitude": -77.19 }, "id": { "authority": "EPSG", "code": 1072 } }