/// <summary>
/// Calculate satellite ECI position/velocity for a given time.
/// </summary>
/// <param name="mpe">Target time, in minutes past the TLE epoch.</param>
/// <returns>Kilometer-based position/velocity ECI coordinates.</returns>
public EciTime PositionEci(double mpe)
{
EciTime eci = NoradModel.GetPosition(mpe);
// Convert ECI vector units from AU to kilometers
double radiusAe = Globals.Xkmper / Globals.Ae;
eci.ScalePosVector(radiusAe); // km
eci.ScaleVelVector(radiusAe * (Globals.MinPerDay / 86400)); // km/sec
return(eci);
}
/// <summary>
/// Calculate satellite ECI position/velocity for a given time.
/// </summary>
/// <param name="mpe">Target time, in minutes past the TLE epoch.</param>
/// <returns>Kilometer-based position/velocity ECI coordinates.</returns>
public TimedMotionState PositionEci(double mpe)
{
TimedMotionState eci = NoradModel.GetPosition(mpe);
// Convert ECI vector units from AU to kilometers
double radiusAe = OrbitConsts.RadiusOfEquator / OrbitConsts.Ae;
eci.ScalePosVector(radiusAe); // km
eci.ScaleVelVector(radiusAe * (OrbitConsts.MinPerDay / 86400.0)); // km/sec
return eci;
}