White shiny sphere hovering then traveling very slowly from N to S then 90 degree turn east. Possibly two tone black/wht.

White shiny sphere was spotted hovering 50 degrees above horizon. We live on flight path to PHL airport see planes all day. This was not a plane and hovered under the approach altitude. Began to slowly move south then sharply turned east and slightly picked up speed and went out of sight. Seen by wife and kids as well. Too low to be a plane, too large to be a drone. Made no sound. There’s a possibility is was rotating as it reflected sunlight then did not, maybe some black color on the top. Also at times looked like it was emanating light smoke or mist.