code: def triangle(self, params=None, **kwargs):
          
          if params is None:
              params = ['mass_A', 'mass_B', 'mass_C', 
                        'age', 'feh', 'distance', 'AV']
  
          super(TripleStarModel, self).triangle(params=params, **kwargs)
docs: Makes a nifty corner plot.