About STEX
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 25489U 98055A 26016.54609985 .00000380 00000-0 89471-4 0 9990
2 25489 84.9804 65.8024 0008563 189.8380 170.2657 14.51667274441333
Epoch: Jan 16, 2026 •
Age: 15 hours
Current Status
Altitude 735.3 km
Velocity 7.48 km/s
Sub-Earth Point -26.85°S,
111.77°W
Launch Date Oct 3, 1998
Age 27.2 years
Type other
Technical Details
Classification Payload
Mass 671.00 kg
Dry Mass 510.00 kg
Total Mass 671.00 kg
Length 2.00 m
Diameter 1.20 m
Span 5.00 m
Shape Box + 2 Pan
Manufacturer LMA/DENV
Bus Type STEX
Phase Status In Orbit
Owner/State NROC/US
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