About Gravity Probe B
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 28230U 04014A 26018.58589086 .00000722 00000-0 86887-4 0 9992
2 28230 89.8412 53.0802 0003372 93.7315 266.4296 14.82998124630170
Epoch: Jan 18, 2026 •
Age: 11 hours
Current Status
Altitude 651.0 km
Velocity 7.53 km/s
Sub-Earth Point -86.86°S,
83.35°W
Launch Date Apr 20, 2004
Age 21.7 years
Type other
Technical Details
Classification Payload
Mass 3145.00 kg
Dry Mass 2805.00 kg
Total Mass 3145.00 kg
Length 6.40 m
Diameter 2.60 m
Span 6.40 m
Shape Ell + Ant + 4 Pan
Manufacturer LMMS/STAN
Phase Status In Orbit
Owner/State MSFC/US
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