| Primary satellite | Secondary satellite |
| Name | Envisat | COSMOS 2251 DEB |
| Spacetrack catalog number | 27386 | 34003 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2024 Sep 09 11:15 | 2024 Sep 08 07:27 |
| Time of closest approach (UTC) | 2024 Aug 06 21:39:54.248 |
| Minimum distance | 402.834 km |
| Height difference | 7.558 km |
| Relative speed | 14.386 km/s |
| Angle between velocity vectors | 147° |
| Geographic position | 66.6°S, 58.8°E |
| Height | 788 km |
|