Spacecraft information: HIPPARCOS
| 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 | 6.916° |
| Eccentricity | 0.71940 |
| RA ascending node | 19.840 hr |
| Argument perigee | 28.739° |
| Mean anomaly | 356.620° |
| Orbital period | 635.995 min |
| Epoch of osculation | 18 Aug 2026, 16:20 |
Derived Quantities
| Min Altitude | 503.2 km |
| Mean Altitude | 18126.9 km |
| Peak Altitude | 35750.7 km |
Orbital History
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