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About USA 77
Group: 3 satellites
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Two-Line Element Set
1 21809U 91076E 26104.00607264 .00003103 00000-0 25392-3 0 9992
2 21809 63.2985 329.1367 0899651 73.4355 296.3462 13.56037899 95569
Epoch: Apr 14, 2026 •
Age: 13 hours
Current Status
Altitude 421.3 km
Velocity 7.98 km/s
Sub-Earth Point 46.03°N,
35.24°W
Launch Date Nov 8, 1991
Age 34.4 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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