Bright UFO caught near Banff, Alberta

On June 19, 2016, two friends were in a car on a road located in Banff (in the province of Alberta, Canada). One of them has caught a bright unidentified flying object without seeing it. What is it?

Witness statement:

Was in the car with my friend on my way from Banff Alberta on my way to Calgary, i took a pic of the last chunk of hills before the land flattened out and didnt see anything in the moment, until 2 days later i was looking through my photos and realized there was a ufo or something round shaped object in the sky where there was no clouds,couldn't have been a cloud or a drone or a plane because i dont know of any round shaped airplane and it size compared to the hill beside it doesnt make sense. You have to zoom in to see the UFO.