| Primary satellite | Secondary satellite |
| Name | Envisat | COSMOS 2251 DEB |
| Spacetrack catalog number | 27386 | 33760 |
| Radar cross section | large | medium |
| Epoch of two-line elements (UTC) | 2023 Mar 21 20:09 | 2023 Mar 21 02:37 |
| Time of closest approach (UTC) | 2023 Feb 10 15:49:46.495 |
| Minimum distance | 41.106 km |
| Height difference | -3.293 km |
| Relative speed | 3.175 km/s |
| Angle between velocity vectors | 25° |
| Geographic position | 9.5°S, 0.4°E |
| Height | 770 km |
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