USSF-57
Planned 2027
First of three Next-Generation Overhead Persistent Infrared (NG-OPIR) geosynchronous missile-warning satellites, built by Lockheed Martin on its LM2100 bus to begin replacing the Space-Based Infrared System (SBIRS) constellation. The last SBIRS geosynchronous satellite, SBIRS GEO-6, launched in August 2022.
PLANNED
2027
planned, exact time pending
Upcoming
launching from SLC-41 Canaveral
aboard Vulcan Centaur V-005 into GSO
Payload
NG-OPIR-GEO 1 (NGG-1)
Early warning