About USA 77
Group: 3 satellites
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Live Position
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Altitude History
Altitude vs Time
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Two-Line Element Set
1 21809U 91076E 26009.65562668 .00003959 00000-0 32990-3 0 9996
2 21809 63.2960 220.6996 0899688 71.6361 298.0315 13.55208665 82777
Epoch: Jan 9, 2026 •
Age: 32 hours
Current Status
Altitude 823.5 km
Velocity 7.56 km/s
Sub-Earth Point -2.76°S,
111.31°E
Launch Date Nov 8, 1991
Age 34.1 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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