STSS ATRR (USA 205)

NORAD 34903 · Payload · In orbit since 2009

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Launched: 2009-05-05 · Vandenberg, USA
Country / operator: US (United States)
Object type: Payload
Purpose: Early warning
Mass: 2,000 kg
Size: 4 × 2.5 m · 8 m deployed
Orbit class: LEO (< 2,000 km)
Perigee × Apogee: 636 × 872 km
Inclination: 98.9°
Period: 99.8 min
Eccentricity: 0.0166
Orbit data: Reconstructed from catalog orbit

Mass, size and purpose from GCAT (J. McDowell, CC BY 4.0).