docs: def star_config(koi, bands=['g','r','i','z','J','H','K'],
                  unc=dict(g=0.05, r=0.05, i=0.05, z=0.05,
                           J=0.02, H=0.02, K=0.02), **kwargs):
  
      """returns star config object for given KOI
      """
      folder = os.path.join(KOI_FPPDIR, ku.koiname(koi))
      if not os.path.exists(folder):
          os.makedirs(folder)
  
      config = ConfigObj(os.path.join(folder,'star.ini'))
  
      koi = ku.koiname(koi)
  
      maxAV = koi_maxAV(koi)
      config['maxAV'] = maxAV
  
      mags = ku.KICmags(koi)
      for band in bands:
          if not np.isnan(mags[band]):
              config[band] = (mags[band], unc[band])
      config['Kepler'] = mags['Kepler']
  
      kepid = KOIDATA.ix[koi,'kepid']
  
      if use_property(kepid, 'teff'):
          teff, e_teff = (kicu.DATA.ix[kepid, 'teff'],
                            kicu.DATA.ix[kepid, 'teff_err1'])
          if not any(np.isnan([teff, e_teff])):
              config['Teff'] = (teff, e_teff)
  
      if use_property(kepid, 'logg'):
          logg, e_logg = (kicu.DATA.ix[kepid, 'logg'],
                            kicu.DATA.ix[kepid, 'logg_err1'])
          if not any(np.isnan([logg, e_logg])):
              config['logg'] = (logg, e_logg)
  
      if use_property(kepid, 'feh'):
          feh, e_feh = (kicu.DATA.ix[kepid, 'feh'],
                            kicu.DATA.ix[kepid, 'feh_err1'])
          if not any(np.isnan([feh, e_feh])):
              config['feh'] = (feh, e_feh)
  
      for kw,val in kwargs.items():
          config[kw] = val
  
      return config