| Name of Satellite, Alternate Names | Satellite XMM Newton (High Throughput X-ray Spectroscopy Mission) |
| Country of Operator/Owner | ESA |
| Operator/Owner | European Space Operations Centre (ESOC) |
| Users | Government |
| Purpose | Space Physics |
| Class of Orbit | Elliptical |
| Type of Orbit | Deep Highly Eccentric |
| Longitude of GEO (degrees) | 0 |
| Perigee (km) | 7079 |
| Apogee (km) | 114027 |
| Eccentricity | 0.799037700043333 |
| Inclination (degrees) | 38.4 |
| Period (minutes) | 2872.15 |
| Launch Mass (kg.) | 3764 |
| Dry Mass (kg.) | 3233 |
| Power (watts) | |
| Date of Launch | 10-12-1999 |
| Expected Lifetime | 2-10 yrs. |
| Contractor | Dornier Systems (and 46 subcontractors) |
| Country of Contractor | International |
| Launch Site | Guiana Space Center |
| Launch Vehicle | Ariane 5 |
| COSPAR Number | 1999-066A |
| NORAD Number | 25989 |
| Comments | Detect and study celestial x-ray sources. |