Malongo 1987 UTM zone 33S - EPSG:7992

WKT

PROJCS["Malongo_1987_UTM_zone_33S", 
	GEOGCS["GCS_Malongo_1987", 
		DATUM["D_Malongo_1987", 
			SPHEROID["International_1924", 6378388.0, 297.0]], 
		PRIMEM["Greenwich", 0.0], 
		UNIT["Degree", 0.0174532925199433]], 
	PROJECTION["Transverse_Mercator"], 
	PARAMETER["False_Easting", 500000.0], 
	PARAMETER["False_Northing", 10000000.0], 
	PARAMETER["Central_Meridian", 15.0], 
	PARAMETER["Scale_Factor", 0.9996], 
	PARAMETER["Latitude_Of_Origin", 0.0], 
	UNIT["Meter", 1.0]]

WKT2

PROJCRS["Malongo_1987_UTM_zone_33S", 
	BASEGEOGCRS["GCS_Malongo_1987", 
		DATUM["D_Malongo_1987", 
			ELLIPSOID["International_1924", 6378388.0, 297.0]], 
		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", 500000.0], 
		PARAMETER["False_Northing", 10000000.0], 
		PARAMETER["Central_Meridian", 15.0], 
		PARAMETER["Scale_Factor", 0.9996], 
		PARAMETER["Latitude_Of_Origin", 0.0]], 
	CS[Cartesian, 2], 
	AXIS["Easting (X)", east, 
		ORDER[1]], 
	AXIS["Northing (Y)", north, 
		ORDER[2]], 
	LENGTHUNIT["Meter", 1.0], 
	ID["EPSG", "7992"]]

Data from @esri/proj-codes

{
  "wkid": 7992,
  "latestWkid": 7992,
  "gcsWkid": 4259,
  "macro": "PE_PCS_MALONGO_1987_UTM_33S",
  "name": "Malongo_1987_UTM_zone_33S",
  "wkt": "PROJCS[\"Malongo_1987_UTM_zone_33S\",GEOGCS[\"GCS_Malongo_1987\",DATUM[\"D_Malongo_1987\",SPHEROID[\"International_1924\",6378388.0,297.0]],PRIMEM[\"Greenwich\",0.0],UNIT[\"Degree\",0.0174532925199433]],PROJECTION[\"Transverse_Mercator\"],PARAMETER[\"False_Easting\",500000.0],PARAMETER[\"False_Northing\",10000000.0],PARAMETER[\"Central_Meridian\",15.0],PARAMETER[\"Scale_Factor\",0.9996],PARAMETER[\"Latitude_Of_Origin\",0.0],UNIT[\"Meter\",1.0]]",
  "wkt2": "PROJCRS[\"Malongo_1987_UTM_zone_33S\",BASEGEOGCRS[\"GCS_Malongo_1987\",DATUM[\"D_Malongo_1987\",ELLIPSOID[\"International_1924\",6378388.0,297.0]],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\",500000.0],PARAMETER[\"False_Northing\",10000000.0],PARAMETER[\"Central_Meridian\",15.0],PARAMETER[\"Scale_Factor\",0.9996],PARAMETER[\"Latitude_Of_Origin\",0.0]],CS[Cartesian,2],AXIS[\"Easting (X)\",east,ORDER[1]],AXIS[\"Northing (Y)\",north,ORDER[2]],LENGTHUNIT[\"Meter\",1.0],ID[\"EPSG\",\"7992\"]]",
  "description": "Malongo 1987 UTM zone 33S",
  "authority": "EPSG",
  "version": "9.0.1(10.6.0)",
  "deprecated": "no",
  "areaname": "DR Congo (Zaire) - offshore",
  "extent": {
    "slat": -6.04,
    "nlat": -5.79,
    "llon": 11.79,
    "rlon": 12.37
  }
}