Daylight sighting

At approximately 1:20pm my husband and I were traveling to the store in the city of Fond du lac. We were traveling on Artisan Road and hwy UU in Fond du Lac County. We were both stunned to see a large silver disc type object. We both looked at each other and confirmed with both saw the large object approximately 500ft in the sky. We both were studying the object when it suddenly disappeared. We did not see it fly away. It just disappeared. The weather was approximately 60 degrees and very sunny with limited clouds in the sky. To this day, we both wonder we saw due to the enormity of its size and how clearly we saw this object. There was no sound heard or any movement. The object was just hovering. Thank you