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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 | 0.00034 |
| RA ascending node | 3.812 hr |
| Argument perigee | 95.987° |
| Mean anomaly | 264.175° |
| Orbital period | 97.133 min |
| Epoch of osculation | 28 Jun 2025, 13:37 |
Derived Quantities
| Min Altitude | 626.2 km |
| Mean Altitude | 628.6 km |
| Peak Altitude | 631.0 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