Based on the multiband ( BVRIJHKL ) photometric observations of the active red giant PZ Mon performed for the first time in the winter season of 2017–2018 , we have determined the main characteristics of the spotted stellar surface in a parametric three-spot model .
The unspotted surface temperature is T _ { eff } = 4730 K , the temperature of the cool spots is T _ { s } = 3500 K , their relative area is about 41 % , and the temperature of the warm spots is T _ { w } \approx 4500 K with a maximum relative area up to 20 % .
The distribution of spots over the stellar surface has been modeled .
The warm spots have been found to be distributed at various longitudes in the hemisphere on the side of the secondary component and are most likely a result of its influence .