About USA 77
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 21809U 91076E 26058.79249696 .00003398 00000-0 28073-3 0 9992
2 21809 63.2962 89.7312 0900093 72.5617 297.1702 13.55554735 89434
Epoch: Feb 27, 2026 •
Age: 10 hours
Current Status
Altitude 1409.8 km
Velocity 6.98 km/s
Sub-Earth Point -16.78°S,
47.92°E
Launch Date Nov 8, 1991
Age 34.3 years
Type military
Technical Details
Classification Payload
Mass 400.00 kg
Dry Mass 400.00 kg
Total Mass 400.00 kg
Length 1.00 m
Diameter 1.00 m
Span 10.00 m
Shape Box + Ant
Manufacturer NRL
Bus Type NOSS B SSU
Phase Status In Orbit
Owner/State NRO/NRL/US
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