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HIPPARCOS
Launch Details
| Launched | 7 August 1989 |
| Flight ended | – |
| Status | Non-operational |
| Launch site | Europe's Spaceport, Kourou, French Guiana |
| Owner | European Space Agency |
| NORAD ID | 20169 |
| COSPAR ID | 1989-062B |
| Observing |
Current orbital elements
| Inclination | 7.000° |
| Eccentricity | 0.71974 |
| RA ascending node | 2.994 hr |
| Argument perigee | 171.417° |
| Mean anomaly | 215.965° |
| Orbital period | 636.069 min |
| Epoch of osculation | 29 Oct 2025, 05:38 |
Derived Quantities
| Min Altitude | 495.3 km |
| Mean Altitude | 18128.8 km |
| Peak Altitude | 35762.3 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.