About USA 55
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 20547U 90028B 26002.81196446 .00009038 00000-0 19841-3 0 9992
2 20547 94.0953 50.4264 0059820 51.4086 309.2505 15.42141952976380
Epoch: Jan 2, 2026 •
Age: 9 hours
Current Status
Altitude 503.7 km
Velocity 7.59 km/s
Sub-Earth Point -62.44°S,
55.17°E
Launch Date Apr 5, 1990
Age 35.7 years
Type military
Technical Details
Classification Payload
Mass 68.00 kg
Dry Mass 68.00 kg
Total Mass 68.00 kg
Length 0.40 m
Diameter 0.40 m
Span 0.40 m
Shape Poly
Manufacturer DSI
Bus Type GLOMR
Phase Status In Orbit
Owner/State DARPA/USN/US
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