Pulsing stationary star like object (daytime sighting)

While waiting outside a beach side gift shop for my wife I was sitting on a bench facing east. Time was shortly after 12 pm EST. sky was clear with sea breeze. Looking up at the sky, I noticed a faint stationary star like object between two small clouds. What was interesting about the object was it seemed to brighten and dim with yellowish white light almost to non-visibility very irregularly. At some points it got quite bright, and then would dim and brighten again. It seemed to be very high up, too high for a drone, and if I had to guess, it seemed like something metallic, reflecting sunlight. No shape was discernable, it was a pinpoint of light. It was slighting north of east and about 50 degrees above the horizon. Interesting thing to me was it was absolutely stationary and never moved the whole time i saw it. The whole sighting lasted under 10 minutes. Object finally just disappeared and was no longer visible. I do not believe it was a drone or balloon, or conventional aircraft, the way it dimmed and brightened was unusual, and the impression it gave me was that it was something very high up.