| Primary satellite | Secondary satellite |
| Name | Envisat | SMOS |
| Spacetrack catalog number | 27386 | 36036 |
| Radar cross section | large | large |
| Epoch of two-line elements (UTC) | 2025 Jul 13 11:52 | 2025 Jul 12 18:28 |
| Time of closest approach (UTC) | 2025 Jun 18 16:03:19.041 |
| Minimum distance | 2.083 km |
| Height difference | -2.022 km |
| Relative speed | 13.287 km/s |
| Angle between velocity vectors | 125° |
| Geographic position | 71.5°N, 176.9°W |
| Height | 774 km |
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