| Primary satellite | Secondary satellite |
| Name | Envisat | COSMOS 2251 DEB |
| Spacetrack catalog number | 27386 | 34323 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2024 Sep 09 11:15 | 2024 Sep 08 14:31 |
| Time of closest approach (UTC) | 2024 Aug 06 04:40:54.898 |
| Minimum distance | 32.590 km |
| Height difference | 4.474 km |
| Relative speed | 14.875 km/s |
| Angle between velocity vectors | 172° |
| Geographic position | 5.3°S, 27.7°W |
| Height | 766 km |
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