About SS 1
Group: 3 satellites
Description loading...
Live Position
Loading 3D Globe...
Upcoming Passes
Altitude History
Altitude vs Time
uPlot chart will show altitude changes over time
Two-Line Element Set
1 10529U 77112D 26013.51452293 .00000363 00000-0 12744-3 0 9991
2 10529 63.3366 68.7856 0530981 160.3305 201.9108 13.90141255330693
Epoch: Jan 13, 2026 •
Age: 16 hours
Current Status
Altitude 1015.7 km
Velocity 7.31 km/s
Sub-Earth Point 47.39°N,
76.35°W
Launch Date Dec 8, 1977
Age 48.1 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
Large Constellations
Loading constellations...