About USA 121
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 23908U 96029C 26063.09039928 .00001593 00000-0 28293-3 0 9990
2 23908 63.3191 106.5530 0846399 47.8456 319.1385 13.45866033 89220
Epoch: Mar 4, 2026 •
Age: 9 hours
Current Status
Altitude 958.6 km
Velocity 7.44 km/s
Sub-Earth Point -30.38°S,
149.42°E
Launch Date May 12, 1996
Age 29.8 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 NROC/NRL/US
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