About DMSP F-4
Group: 3 satellites
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Live Position
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Upcoming Passes
Altitude History
Altitude vs Time
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Two-Line Element Set
1 11389U 79050A 26011.64870116 .00000172 00000-0 84987-4 0 9996
2 11389 98.6108 327.9793 0010850 238.5738 121.4384 14.29274893353346
Epoch: Jan 11, 2026 •
Age: 4 hours
Current Status
Altitude 812.0 km
Velocity 7.45 km/s
Sub-Earth Point 59.73°N,
86.32°W
Launch Date Jun 6, 1979
Age 46.6 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
Large Constellations
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