Map of the St. Louis area showing the position and track of the aircraft described in the post.

🇺🇸 N863GT - Boeing 747 8F - Atlas Air GTI8937/5Y8937 (MIA-ANC-CTU) - 4.7 mi away @ 39850 ft, heading WNW at 463 mph. Spotted once before! [11:52:22 PM CST] #ABDAA4 #N863GT #B748 #GIANT #GTI8937 #5Y8937 #ADSB #ADSBbot