Polaris Intelligence
Polaris
Intelligence
About
Ctrl K
Sign in
© Polaris Intelligence 2026
PrivacyTermsAdmin

USA-25

retired
Signals IntelligenceLEOCOSPAR 1987-043HLaunched 5/15/1987
Admin Edit
Mission & Launch
Launch Mission
USA 22-25 [NOSS9]
Launch Vehicle
Atlas H
Launch Date
5/15/1987
Last Contact
1/1/1997
Orbit & Mass
Orbit Class
LEO
Altitude
1,108 km
Inclination
63.42 deg
Dry Mass
200 kg
Total Mass
200 kg
Payload Classification
Mission Type
Signals Intelligence
Payload Category
SIG
Payload Class
D
Organizations
Operator
U.S. National Reconnaissance Office (NRO)
Manufacturer
Lockheed Martin
Registry
COSPAR ID
1987-043H
UN Registration
ST/SG/SER.E/172
Track