| Primary satellite | Secondary satellite |
| Name | Envisat | COSMOS 2251 DEB |
| Spacetrack catalog number | 27386 | 38068 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2023 Jun 02 13:06 | 2023 May 31 03:12 |
| Time of closest approach (UTC) | 2023 Apr 02 23:35:31.162 |
| Minimum distance | 229.003 km |
| Height difference | -1.369 km |
| Relative speed | 12.501 km/s |
| Angle between velocity vectors | 114° |
| Geographic position | 75.4°S, 27.7°E |
| Height | 790 km |
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