UFO Sighting in Bowling Green, Indiana on 2017-07-29 20:25:00 - Live 2 second picture was taken of a sunset. later seen orb in picture and when picture is activated it moved erratically.

This picture was sent to me by my daughter and son in law. they wanted a picture of a beautiful sunset. the iphone was set for live picture. we are just trying to figure out what it is or what created the effect?