| Primary satellite | Secondary satellite |
| Name | Envisat | SMOS |
| Spacetrack catalog number | 27386 | 36036 |
| Radar cross section | large | large |
| Epoch of two-line elements (UTC) | 2025 Nov 17 20:47 | 2025 Nov 17 18:46 |
| Time of closest approach (UTC) | 2025 Oct 18 09:23:48.741 |
| Minimum distance | 21.919 km |
| Height difference | -2.962 km |
| Relative speed | 13.167 km/s |
| Angle between velocity vectors | 124° |
| Geographic position | 71.8°S, 101.9°E |
| Height | 789 km |
|