A bright yellowish circular object moving swiftly descended behind the tree line behind my apartment patio approximately 60 yards away.

A bright yellowish round object moving swiftly descended behind the tree line behind my apartment approximately 60 yards away from where I was sitting on my back patio. I would estimate the diameter of the object to be 30 to 45 feet. The trajectory of the object was downward and appeared to go down into the wooded area beyond the tree line though the trees were blocking its final destination. It was completely silent, and I also did not hear a crash of any kind. I am a 69-year-old retired accountant and I have never experienced anything similar to this occurrence. I had a good look at this object as it was only about 60 yards away on its descent. I saw only one object.