High Flying orb

I saw a bright orb, white in color, shimmering across the afternoon sky. I jokingly told my 6 year old it was a ufo thinking it was just a high flying plane, as well as pointing it out to my aunt. I tracked it northwest across the clear afternoon sky until it looked like it came to a stop above the house. It sat there and it started fading out until it either disappeared or I lost it in the bright blue afternoon sky.