def get_position(self, utc_time, normalize=True):
        """Get the cartesian position and velocity from the satellite.
        """

        kep = self._sgdp4.propagate(utc_time)
        pos, vel = kep2xyz(kep)

        if normalize:
            pos /= XKMPER
            vel /= XKMPER * XMNPDA / SECDAY

        return pos, vel
def get_position ( self , utc_time , normalize = True ) : kep = self . _sgdp4 . propagate ( utc_time ) pos , vel = kep2xyz ( kep ) if normalize : pos /= XKMPER vel /= XKMPER * XMNPDA / SECDAY return pos , vel
Get the cartesian position and velocity from the satellite.