EPSG
Geographic Survey Institute; Japan; Bulletin 40 (March 1994). Also http://vldb.gsi.go.jp/sokuchi/datum/tokyodatum.html
2010-06-30
Geodesy, cadastre, engineering survey, topographic mapping.
In Japan, replaces Tokyo 1892 (code 1048) and replaced by Japanese Geodetic Datum 2000 (code 6611). In Korea used only for geodetic applications before being replaced by Korean 1985 (code 6162).
Japan - onshore; North Korea - onshore; South Korea - onshore.
Definition: JSON
{ "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json", "type": "GeodeticReferenceFrame", "name": "Tokyo", "ellipsoid": { "name": "Bessel 1841", "semi_major_axis": 6377397.155, "inverse_flattening": 299.1528128 }, "scope": "Geodesy, cadastre, engineering survey, topographic mapping.", "area": "Japan - onshore; North Korea - onshore; South Korea - onshore.", "bbox": { "south_latitude": 20.37, "west_longitude": 122.83, "north_latitude": 45.54, "east_longitude": 154.05 }, "id": { "authority": "EPSG", "code": 6301 } }