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GP-B
Launch Details
| Launched | 19 April 2004 |
| Flight ended | – |
| Status | Non-operational |
| Launch site | Air Force Western Test Range, California, USA |
| Owner | United States |
| NORAD ID | 28230 |
| COSPAR ID | 2004-014A |
| Alternative names |
GRAVITY PROBE B |
| Observing |
Current orbital elements
| Inclination | 89.838° |
| Eccentricity | 0.00024 |
| RA ascending node | 3.703 hr |
| Argument perigee | 107.263° |
| Mean anomaly | 252.886° |
| Orbital period | 97.125 min |
| Epoch of osculation | 15 Sep 2025, 04:49 |
Derived Quantities
| Min Altitude | 626.5 km |
| Mean Altitude | 628.2 km |
| Peak Altitude | 629.9 km |
Orbital History
Drag the graphs below left or right to change the time range, or use your scroll wheel to zoom in or out.
Launched alongside
DELTA 2 R/B