| Primary satellite | Secondary satellite |
| Name | Envisat | COSMOS 2251 DEB |
| Spacetrack catalog number | 27386 | 35060 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2023 Jun 02 13:06 | 2023 Jun 01 09:25 |
| Time of closest approach (UTC) | 2023 Apr 06 21:43:53.843 |
| Minimum distance | 24.447 km |
| Height difference | -1.327 km |
| Relative speed | 14.895 km/s |
| Angle between velocity vectors | 170° |
| Geographic position | 36.0°N, 97.0°W |
| Height | 770 km |
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