| Name of Satellite, Alternate Names | TanDEM-X (TerraSAR-X add-on for Digital Elevation Measurement) |
| Country of Operator/Owner | Germany |
| Operator/Owner | German Aerospace Center (DLR)/Astrium |
| Users | Government |
| Purpose | Earth Observation |
| Class of Orbit | LEO |
| Type of Orbit | Sun-Synchronous |
| Longitude of GEO (degrees) | 0 |
| Perigee (km) | 507 |
| Apogee (km) | 510 |
| Eccentricity | 0.000218070800319837 |
| Inclination (degrees) | 97.4 |
| Period (minutes) | 94.8 |
| Launch Mass (kg.) | 1350 |
| Dry Mass (kg.) | |
| Power (watts) | |
| Date of Launch | 21-06-2010 |
| Expected Lifetime | 5 yrs. |
| Contractor | EADS Astrium |
| Country of Contractor | France/UK/Germany/Spain |
| Launch Site | Baikonur Cosmodrome |
| Launch Vehicle | Dnepr |
| COSPAR Number | 2010-030A |
| NORAD Number | 36605 |
| Comments | Will survey all 150 million square kilometers of earth surface. Works with TerraSAR-X for first three years. |