About USA 81
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 21949U 92023A 26059.15814328 .00000179 00000-0 59026-4 0 9998
2 21949 85.0103 136.9388 0002709 85.6704 274.4798 14.32364231 93428
Epoch: Feb 28, 2026 •
Age: 21 hours
Current Status
Altitude 792.9 km
Velocity 7.46 km/s
Sub-Earth Point 61.74°N,
168.12°W
Launch Date Apr 25, 1992
Age 33.8 years
Type military
Technical Details
Classification Payload
Mass 1450.00 kg
Dry Mass 1200.00 kg
Total Mass 1450.00 kg
Length 0.50 m
Diameter 1.00 m
Span 10.00 m
Shape Cyl + Ant
Manufacturer LMSC
Bus Type NRO-T2
Phase Status In Orbit
Owner/State NRO/US
Large Constellations
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