NSSDCA/COSPAR ID: 2017-056A
The spacecraft are probably the next generation for the Trumpet and 'Trumpet-F/O' SIGINT satellites operating in a Molniya orbit.
Launch Date: 2017-09-24
Launch Vehicle: Atlas V
Launch Site: Vandenberg AFB, United States
Questions and comments about this spacecraft can be directed to: Coordinated Request and User Support Office