Ctrl K

© Polaris Intelligence 2026

Privacy Terms Admin

STSS 2

retired

Missile Warning TrackingLEOCOSPAR 2009-052BLaunched 9/25/2009

Mission & Launch

Launch Mission: USA 208/USA 209
Launch Vehicle: Delta 7920-10C
Launch Date: 9/25/2009
Last Contact: 11/22/2021

Orbit & Mass

Orbit Class: LEO
Altitude: 1,344.5 km
Inclination: 58 deg
Dry Mass: 1,022 kg
Total Mass: 1,022 kg

Payload Classification

Mission Type: Missile Warning Tracking
Payload Category: EW*
Payload Class: D

Organizations

Operator: U.S. Missile Defense Agency (MDA)
Manufacturer: Northrop Grumman

Registry

COSPAR ID: 2009-052B
UN Registration: ST/SG/SER.E/587