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

🇩🇪 D-AALY - BOEING 777-200LR - BOX468 - 4.6 mi away @ 37075 ft, heading SSW at 600 mph. Spotted for first time! [10:58:31 AM CDT] #3C4599 #D_AALY #B77L #BOX468 #ADSB #ADSBbot