Bright light in the sky. Disappeared without moving.

I was driving south on US127 in Anderson County, Kentucky, approximately where Bluegrass College of Technology is located, when I noticed a bright light in the sky. It looked like a bright star but at 7:22am the sun had already risen and the sky was clear blue so my initial thought when I saw it was that it was sunlight reflecting off an aircraft. The luminescence increased rapidly and then disappeared, but when it disappeared there was no sign of aircraft where it was. An aircraft would have been visible against the sky, and sun reflecting off a stationary satellite (if there is one in that location) would not have been that bright. I estimate it to have been at least ten miles away, appearing about 55° from ground level and slightly to the left of the direction I was facing (in the viscinity of Sirius). If my estimate is accurate it would have been somewhere between Lawrenceburg and Harrodsburg in Kentucky.