USA 278

NORAD 42941 · Payload · In orbit since 2017

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Launched: 2017-09-24 · Vandenberg, USA
Country / operator: US (United States)
Object type: Payload
Purpose: Signals intelligence
Mass: 4,000 kg
Size: 7 × 4 m · 10 m deployed
Orbit class: Highly elliptical
Perigee × Apogee: 2,197 × 38,161 km
Inclination: 62.9°
Period: 717.6 min
Eccentricity: 0.6773
Orbit data: Reconstructed from catalog orbit

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