Spacecraft information: SSETI EXPRESS
| Launched | 26 October 2005 |
| Flight ended | – |
| Status | Non-operational |
| Launch site | Plesetsk Missile and Space Complex, Russia |
| Owner | European Space Agency |
| NORAD ID | 28894 |
| COSPAR ID | 2005-043E |
| Alternative names |
XO-53 |
| Observing |
Current orbital elements
| Inclination | 98.280° |
| Eccentricity | 0.00167 |
| RA ascending node | 7.977 hr |
| Argument perigee | 142.342° |
| Mean anomaly | 217.895° |
| Orbital period | 98.288 min |
| Epoch of osculation | 12 Dec 2025, 06:38 |
Derived Quantities
| Min Altitude | 672.2 km |
| Mean Altitude | 683.9 km |
| Peak Altitude | 695.7 km |
Orbital History
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