pabbetuanna dapara'na tasie Iyya rikira kirae iyanariti datum WGS 84, seddi ellipsoid, yakkepaha pabettuang Iyya kaminang macakkae iyanaritu Earth Gravitational Model 2008 (EGM2008), namuni engkai nakkegunang dua ssebbu siraatu lima Pulo asera madeeceng gulilinna.