'dropouts' : 2016-031B re-entered the atmosphere in January 2019,  and its absence from Space-Track TLEs since then is entirely reasonable.  Expanded explanatory text slightly.
'dropouts' : 2016-031B re-entered the atmosphere in January 2019,  and its absence from Space-Track TLEs since then is entirely reasonable.  Expanded explanatory text slightly.

Bill-Gray/sat_code,Bill-Gray/sat_code