Bright sphere shaped object that appeared to be sitting stationary above the hills on the horizon for approximately 8 minutes.

I witnessed a very bright sphere shaped object. It appeared to be sitting stationary above the hills on the horizon for approximately 8 minutes. We have an main airport, smaller airports and an Air Force base nearby, so we're used to seeing various planes and helicopters.
It was close to sunset and I was walking my dogs at the time. The object appeared to be too large to be a star and too small to be the moon at that distance. It seemed to be about 3-4 miles out. I continued to walk with slowly with my dogs as I watched the object. However, at one point both of my dogs stopped and stared in the same direction as well.
The object disappeared from view after approximately 8 minutes. I saw a plane fly through the area shortly after. The plane was easy to identify due to it's blinking light pattern and exhaust trail.