| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | FENGYUN 1C DEB |
| Spacetrack catalog number | 35453 | 36244 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 19 15:23 | 2024 Dec 20 05:26 |
| Time of closest approach (UTC) | 2024 Dec 24 18:46:20.076 |
| Minimum distance | 1.279 km |
| Height difference | -1.275 km |
| Relative speed | 14.357 km/s |
| Angle between velocity vectors | 149° |
| Geographic position | 71.5°S, 123.5°W |
| Height | 818 km |
|