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 26055.49040869 .00005512 00000-0 11956-3 0 9993
2 20547 94.0901 80.0445 0055678 204.8079 155.0497 15.42823662984501
Epoch: Feb 24, 2026 •
Age: 16 hours
Current Status
Altitude 464.8 km
Velocity 7.63 km/s
Sub-Earth Point 85.67°N,
119.38°E
Launch Date Apr 5, 1990
Age 35.8 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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