code: def getRaDecs(self, mods):
          
          raDecOut = np.empty( (len(mods), 5))
          raDecOut[:,0:3] = mods[:,0:3]
  
          for i, row in enumerate(mods):
              raDecOut[i, 3:5] = r.raDecFromVec(row[3:6])
          return raDecOut
docs: Internal function converting cartesian coords to
          ra dec