About USA 21
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 17506U 87015A 26045.14445649 -.00000778 00000-0 -21159-2 0 9998
2 17506 62.9671 273.1681 7275603 278.0632 12.4511 2.01482512 42766
Epoch: Feb 14, 2026 •
Age: 264 hours
Current Status
Altitude 29275.4 km
Velocity 2.70 km/s
Sub-Earth Point 57.59°N,
112.63°E
Launch Date Feb 12, 1987
Age 39 years
Type military
Technical Details
Classification Payload
Mass 800.00 kg
Dry Mass 650.00 kg
Total Mass 800.00 kg
Length 7.00 m
Diameter 2.40 m
Span 7.00 m
Shape Cyl + 2 Dish
Manufacturer HSES
Bus Type SDS
Phase Status In Orbit
Owner/State NRO/SAFSP/US
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