code: def altaz(self, temperature_C=None, pressure_mbar='standard'):
          
          return _to_altaz(self.position.au, self.observer_data,
                           temperature_C, pressure_mbar)
docs: Compute (alt, az, distance) relative to the observer's horizon
  
          The altitude returned is an `Angle` in degrees above the
          horizon, while the azimuth is the compass direction in degrees
          with north being 0 degrees and east being 90 degrees.