| 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) | 2023 Sep 28 22:23 | 2023 Sep 28 15:25 |
| Time of closest approach (UTC) | 2022 Aug 18 09:45:19.423 |
| Minimum distance | 2492.518 km |
| Height difference | 15.788 km |
| Relative speed | 14.922 km/s |
| Angle between velocity vectors | 178° |
| Geographic position | 19.1°S, 88.5°W |
| Height | 770 km |
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