| Primary satellite | Secondary satellite |
| Name | Envisat | COSMOS 2251 DEB |
| Spacetrack catalog number | 27386 | 46271 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2022 May 22 10:51 | 2022 May 24 19:39 |
| Time of closest approach (UTC) | 2022 Jan 25 09:41:37.275 |
| Minimum distance | 193.905 km |
| Height difference | 0.029 km |
| Relative speed | 14.719 km/s |
| Angle between velocity vectors | 161° |
| Geographic position | 59.3°N, 89.3°E |
| Height | 774 km |
|