| Primary satellite | Secondary satellite |
| Name | Envisat | COSMOS 2251 DEB |
| Spacetrack catalog number | 27386 | 34024 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2023 Jun 02 13:06 | 2023 Jun 01 21:35 |
| Time of closest approach (UTC) | 2023 Apr 05 01:40:31.785 |
| Minimum distance | 98.752 km |
| Height difference | 1.696 km |
| Relative speed | 12.590 km/s |
| Angle between velocity vectors | 115° |
| Geographic position | 74.7°S, 1.8°W |
| Height | 790 km |
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