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About DMSP F-4
Group: 3 satellites
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Two-Line Element Set
1 11389U 79050A 26104.61428303 .00000075 00000-0 46712-4 0 9999
2 11389 98.6251 59.9030 0011403 333.5843 26.4757 14.29323057366629
Epoch: Apr 14, 2026 •
Age: 9 hours
Current Status
Altitude 794.6 km
Velocity 7.46 km/s
Sub-Earth Point 34.17°N,
138.32°W
Launch Date Jun 6, 1979
Age 46.8 years
Type other
Technical Details
Classification Payload
Mass 447.00 kg
Dry Mass 447.00 kg
Total Mass 1177.00 kg
Length 6.10 m
Diameter 1.50 m
Span 6.10 m
Shape Box + Pan
Manufacturer RCA
Bus Type Block 5D
Phase Status Attached in Orbit
Owner/State SAMSO/US
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