OPS 5721 (DMSP 5D-1 F1)

NORAD 9415 · Payload · In orbit since 1976

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Launched: 1976-09-11 · Vandenberg, USA
Country / operator: US (United States)
Object type: Payload
Purpose: Meteorology
Mass: 447 kg
Size: 6.1 × 1.5 m
Orbit class: LEO (< 2,000 km)
Perigee × Apogee: 786 × 812 km
Inclination: 98.4°
Period: 100.7 min
Eccentricity: 0.0018
Orbit data: Reconstructed from catalog orbit

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