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

🇱🇺 LX-ECV - Boeing 747 4HQERF - Cargolux Airlines International CLX6696/CV6696 (DFW-NLU-LUX) - 4.9 mi away @ 42950 ft, heading NNE at 580 mph. Spotted for first time! [03:55:42 AM CDT] #4D0115 #LX_ECV #B744 #CARGOLUX #CLX6696 #CV6696 #ADSB #ADSBbot