{"$schema":"https://proj.org/schemas/v0.7/projjson.schema.json","type":"GeographicCRS","name":"IGS97","datum":{"type":"DynamicGeodeticReferenceFrame","name":"IGS97","frame_reference_epoch":1997,"ellipsoid":{"name":"GRS 1980","semi_major_axis":6378137,"inverse_flattening":298.257222101}},"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.","area":"World.","bbox":{"south_latitude":-90,"west_longitude":-180,"north_latitude":90,"east_longitude":180},"id":{"authority":"EPSG","code":9003},"remarks":"Adopted by the International GNSS Service (IGS) from 2000-06-04 through 2001-12-01. Replaced by IGS00 (CRS code 9006). For all practical purposes IGS97 is equivalent to ITRF97."}