Zuma satellite from @northropgrumman may be dead in orbit after separation from @SpaceX Falcon 9, sources say. Info blackout renders any conclusion – launcher issue? Satellite-only issue? — impossible to draw. pic.twitter.com/KggCGNC5Si
Space-Track has cataloged the Zuma payload as USA 280, international designation 2018-001A. Catalog number 43098.
No orbit details given. No reentry date given, but for a secret payload it might not be. Implication is Space-Track thinks it completed at least one orbit