| Primary satellite | Secondary satellite |
| Name | Envisat | COSMOS 2251 DEB |
| Spacetrack catalog number | 27386 | 35669 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2024 Dec 06 15:58 | 2024 Dec 04 12:50 |
| Time of closest approach (UTC) | 2024 Nov 16 15:51:10.333 |
| Minimum distance | 28.658 km |
| Height difference | -2.318 km |
| Relative speed | 14.789 km/s |
| Angle between velocity vectors | 158° |
| Geographic position | 65.3°S, 2.0°E |
| Height | 788 km |
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