| Primary satellite | Secondary satellite |
| Name | Envisat | deb Kosmos-2251 |
| Spacetrack catalog number | 27386 | 25028 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2025 Jul 13 11:52 | 2025 Jul 12 11:50 |
| Time of closest approach (UTC) | 2025 Jun 18 19:22:57.077 |
| Minimum distance | 4.358 km |
| Height difference | -4.225 km |
| Relative speed | 13.851 km/s |
| Angle between velocity vectors | 136° |
| Geographic position | 73.5°N, 136.8°E |
| Height | 774 km |
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