| Primary satellite | Secondary satellite |
| Name | Envisat | COSMOS 2251 DEB |
| Spacetrack catalog number | 27386 | 35459 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2024 Sep 08 21:29 | 2024 Sep 07 11:20 |
| Time of closest approach (UTC) | 2024 Aug 08 14:32:45.037 |
| Minimum distance | 13.391 km |
| Height difference | 0.001 km |
| Relative speed | 14.735 km/s |
| Angle between velocity vectors | 161° |
| Geographic position | 63.1°N, 11.5°W |
| Height | 774 km |
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