USA-268, also known as NROL-37, is an American signals intelligence satellite. Though officially classified, it is known to be an Advanced Orion satellite, making it one of the largest and most expensive satellites ever built.[1]

NROL-37 launch tower view.jpg
Launch of USA-268
Mission typeSignals intelligence
OperatorNational Reconnaissance Office
COSPAR ID2016-036A Edit this at Wikidata
SATCAT no.41584
Spacecraft properties
Spacecraft typeAdvanced Orion
Start of mission
Launch date11 June 2016, 17:51 (2016-06-11UTC17:51Z) UTC
RocketDelta IV Heavy
Launch siteCape Canaveral SLC-37B
Orbital parameters
Reference systemGeocentric
Perigee altitude35,563 kilometers (22,098 mi)
Apogee altitude36,024 kilometers (22,384 mi)
Inclination6.6 degrees
Period1436.1 minutes


USA-268 was launched at 17:51 UTC on 11 June 2016 from Space Launch Complex 37B. It was the ninth flight of a Delta IV Heavy, and the fifth carrying an Advanced Orion.[2]

See alsoEdit


  1. ^ "NROL-37 Satellite – Delta IVH – NROL-37 | Spaceflight101". Retrieved 2020-09-29.
  2. ^ Alliance, United Launch. "United Launch Alliance Successfully Launches NROL-37 Payload for the National Reconnaissance Office". Retrieved 2020-09-29.