| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | FENGYUN 1C DEB |
| Spacetrack catalog number | 34814 | 31608 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 23 04:55 | 2024 Dec 20 12:12 |
| Time of closest approach (UTC) | 2024 Dec 27 08:07:44.964 |
| Minimum distance | 1.544 km |
| Height difference | 0.540 km |
| Relative speed | 14.539 km/s |
| Angle between velocity vectors | 155° |
| Geographic position | 68.3°S, 98.1°W |
| Height | 770 km |
|