SWEREF99 2.5 gon V emulation - EPSG:3847

WKT

PROJCS["SWEREF99_RT90_2.5_gon_V_emulation", 
	GEOGCS["GCS_SWEREF99", 
		DATUM["D_SWEREF99", 
			SPHEROID["GRS_1980", 6378137.0, 298.257222101]], 
		PRIMEM["Greenwich", 0.0], 
		UNIT["Degree", 0.0174532925199433]], 
	PROJECTION["Transverse_Mercator"], 
	PARAMETER["False_Easting", 1500064.274], 
	PARAMETER["False_Northing", -667.711], 
	PARAMETER["Central_Meridian", 15.80628452944445], 
	PARAMETER["Scale_Factor", 1.00000561024], 
	PARAMETER["Latitude_Of_Origin", 0.0], 
	UNIT["Meter", 1.0]]

WKT2

PROJCRS["SWEREF99_RT90_2.5_gon_V_emulation", 
	BASEGEOGCRS["GCS_SWEREF99", 
		DATUM["D_SWEREF99", 
			ELLIPSOID["GRS_1980", 6378137.0, 298.257222101]], 
		PRIMEM["Greenwich", 0.0], 
		CS[ellipsoidal, 2], 
		AXIS["Latitude (lat)", north, 
			ORDER[1]], 
		AXIS["Longitude (lon)", east, 
			ORDER[2]], 
		ANGLEUNIT["Degree", 0.0174532925199433]], 
	CONVERSION["Transverse_Mercator", 
		METHOD["Transverse_Mercator"], 
		PARAMETER["False_Easting", 1500064.274], 
		PARAMETER["False_Northing", -667.711], 
		PARAMETER["Central_Meridian", 15.80628452944445], 
		PARAMETER["Scale_Factor", 1.00000561024], 
		PARAMETER["Latitude_Of_Origin", 0.0]], 
	CS[Cartesian, 2], 
	AXIS["Northing (Y)", north, 
		ORDER[1]], 
	AXIS["Easting (X)", east, 
		ORDER[2]], 
	LENGTHUNIT["Meter", 1.0], 
	ID["EPSG", "3847"]]

Data from @esri/proj-codes

{
  "wkid": 3847,
  "latestWkid": 3847,
  "gcsWkid": 4619,
  "macro": "PE_PCS_SWEREF99_RT90_2_5_GON_V_EMULATION",
  "name": "SWEREF99_RT90_2.5_gon_V_emulation",
  "wkt": "PROJCS[\"SWEREF99_RT90_2.5_gon_V_emulation\",GEOGCS[\"GCS_SWEREF99\",DATUM[\"D_SWEREF99\",SPHEROID[\"GRS_1980\",6378137.0,298.257222101]],PRIMEM[\"Greenwich\",0.0],UNIT[\"Degree\",0.0174532925199433]],PROJECTION[\"Transverse_Mercator\"],PARAMETER[\"False_Easting\",1500064.274],PARAMETER[\"False_Northing\",-667.711],PARAMETER[\"Central_Meridian\",15.80628452944445],PARAMETER[\"Scale_Factor\",1.00000561024],PARAMETER[\"Latitude_Of_Origin\",0.0],UNIT[\"Meter\",1.0]]",
  "wkt2": "PROJCRS[\"SWEREF99_RT90_2.5_gon_V_emulation\",BASEGEOGCRS[\"GCS_SWEREF99\",DATUM[\"D_SWEREF99\",ELLIPSOID[\"GRS_1980\",6378137.0,298.257222101]],PRIMEM[\"Greenwich\",0.0],CS[ellipsoidal,2],AXIS[\"Latitude (lat)\",north,ORDER[1]],AXIS[\"Longitude (lon)\",east,ORDER[2]],ANGLEUNIT[\"Degree\",0.0174532925199433]],CONVERSION[\"Transverse_Mercator\",METHOD[\"Transverse_Mercator\"],PARAMETER[\"False_Easting\",1500064.274],PARAMETER[\"False_Northing\",-667.711],PARAMETER[\"Central_Meridian\",15.80628452944445],PARAMETER[\"Scale_Factor\",1.00000561024],PARAMETER[\"Latitude_Of_Origin\",0.0]],CS[Cartesian,2],AXIS[\"Northing (Y)\",north,ORDER[1]],AXIS[\"Easting (X)\",east,ORDER[2]],LENGTHUNIT[\"Meter\",1.0],ID[\"EPSG\",\"3847\"]]",
  "description": "SWEREF99 2.5 gon V emulation",
  "authority": "EPSG",
  "version": "7.4.3(10.1.0)",
  "deprecated": "no",
  "areaname": "Sweden - 2.5 gon W",
  "extent": {
    "slat": 55.95,
    "nlat": 67.18,
    "llon": 13.66,
    "rlon": 17.73
  }
}