| Primary satellite | Secondary satellite |
| Name | Envisat | COSMOS 2251 DEB |
| Spacetrack catalog number | 27386 | 33758 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2023 Jun 02 13:06 | 2023 Jun 02 10:42 |
| Time of closest approach (UTC) | 2023 Apr 06 15:37:14.753 |
| Minimum distance | 10.328 km |
| Height difference | 3.071 km |
| Relative speed | 14.897 km/s |
| Angle between velocity vectors | 172° |
| Geographic position | 21.1°N, 176.2°W |
| Height | 767 km |
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