Function lupnt::Equatorial2EclipticMatrix¶ Defined in File solar_system.cc Function Documentation¶ Mat3 lupnt::Equatorial2EclipticMatrix(Real mjd_tt)¶ Transformation of equatorial to ecliptical coordinates. Parameters: mjd_tt – Modified Julian Date (Terrestrial Time) Returns: Transformation matrix O. Montenbruck and G. Eberhard, Satellite orbits: models, methods, and applications. Berlin : New York: Springer, 2000. doi: 10.1007/978-3-642-58351-3.