| Primary satellite | Secondary satellite |
| Name | Envisat | COSMOS 2251 DEB |
| Spacetrack catalog number | 27386 | 33948 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2024 Dec 06 15:58 | 2024 Dec 06 06:08 |
| Time of closest approach (UTC) | 2024 Nov 19 18:16:50.117 |
| Minimum distance | 22.077 km |
| Height difference | 0.126 km |
| Relative speed | 3.742 km/s |
| Angle between velocity vectors | 29° |
| Geographic position | 32.8°N, 132.5°E |
| Height | 766 km |
|