About USA 61
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 20691U 90050C 26002.26725358 .00006332 00000-0 45928-3 0 9995
2 20691 63.2969 298.9513 0884755 81.9980 288.0388 13.61371171 83700
Epoch: Jan 2, 2026 •
Age: 19 hours
Current Status
Altitude 1342.8 km
Velocity 7.04 km/s
Sub-Earth Point -34.96°S,
149.51°E
Launch Date Jun 8, 1990
Age 35.5 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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