A triangular or boomerang shape silently flying 500-1000 feet off the ground

I was just outside on a clear night talking on the phone and saw out of the corner of my eye what I initially believed to be a shooting star. Once I focused on it I was in disbelief. It was a definite triangular shaped craft flying slowly and silently from the north to the south with very dim amber lights that I could visibly see on three corners. It was too large to be a drone (probably from my vantage point 40’ wide) and made absolutely no sound.