Live Position
Loading 3D Globe...
About Gravity Probe B
Group: 3 satellites
Description loading...
Upcoming Passes
Passes for default location (London). Set your location on the main map for personalized predictions.
Altitude History
Loading altitude history...
No altitude history available
Two-Line Element Set
1 28230U 04014A 26111.83141075 .00000636 00000-0 75919-4 0 9994
2 28230 89.8507 51.2491 0003339 96.4050 263.7556 14.83202272643994
Epoch: Apr 21, 2026 •
Age: 6 hours
Current Status
Altitude 643.2 km
Velocity 7.53 km/s
Sub-Earth Point -56.83°S,
6.8°W
Launch Date Apr 20, 2004
Age 22 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
Most Searched
Loading...