About SS 1
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 10529U 77112D 25323.04930582 .00000568 00000-0 17470-3 0 9992
2 10529 63.3349 223.7415 0537631 159.5239 202.8295 13.89978227322988
Epoch: Nov 19, 2025 •
Age: 17 hours
Current Status
Altitude 844.2 km
Velocity 7.48 km/s
Sub-Earth Point -49.06°S,
110.63°E
Launch Date Dec 8, 1977
Age 47.9 years
Type other
Technical Details
Classification Payload
Mass 200.00 kg
Dry Mass 200.00 kg
Total Mass 200.00 kg
Length 0.90 m
Diameter 0.40 m
Span 10.00 m
Shape Box + Ant
Manufacturer NRL
Bus Type NOSS SSU
Phase Status In Orbit
Owner/State NRO/NRL/US
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