UFO Sighting in Dayton, Wisconsin on October 13th 2015 – Bright, pulsating star like object. Flight path then hovering then moving left and right.

I was taking some night photos when I saw a streak on my photo. Photos were 30 sec, using tripod and shutter release. As I was taking the next photo I look up and saw a star like object that appeared to be hovering and then slowly moving right then left. The light of it was also pulsating slowly from bright to dim. I did not see any flashing lights. Watched it for about a minute and a half and then it appeared to turn and then it was gone. There were some wispy clouds in the sky. I am an amateur astronomer and I have seen many satellites, iridium flares, ISS, planes etc. I have never witnessed anything like what I saw that night. I have 3 photos that were taken consecutively. 30 sec f2.8 iso800 I was facing North, I thought it was a star at first until I saw it move. It looked like a star as it was moving. I had no idea what it was as I was wathing it.