| Primary satellite | Secondary satellite |
| Name | Envisat | COSMOS 2251 DEB |
| Spacetrack catalog number | 27386 | 35284 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2023 Jun 02 13:06 | 2023 Jun 01 11:43 |
| Time of closest approach (UTC) | 2023 Apr 07 20:23:13.116 |
| Minimum distance | 19.214 km |
| Height difference | 1.678 km |
| Relative speed | 14.765 km/s |
| Angle between velocity vectors | 163° |
| Geographic position | 60.5°S, 94.4°E |
| Height | 786 km |
|