Function lupnt::GreenwichHourAngleMatrix¶ Defined in File solar_system.cc Function Documentation¶ Mat3 lupnt::GreenwichHourAngleMatrix(Real mjd_ut1)¶ Transformation from true equator and equinox to Earth equator and Greenwich meridian system. Parameters: mjd_ut1 – UT1 (Modified Julian Date) Returns: Greenwich Hour Angle matrix