API Reference > imodeljs-common > iModels > EcefLocationProps EcefLocationProps Interface Properties that position an iModel on the earth via ECEF (Earth Centered Earth Fixed) coordinates Implemented by EcefLocation Properties Name Type Description orientation YawPitchRollProps The orientation of an iModel on the earth. origin XYZProps The Origin of an iModel on the earth in ECEF coordinates Defined in core/common/src/IModel.ts Line 75 Last Updated: 13 June, 2024