| Primary satellite | Secondary satellite |
| Name | FENGYUN 1C DEB | COSMOS 2251 DEB |
| Spacetrack catalog number | 33678 | 35465 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 21 13:47 | 2024 Dec 19 19:59 |
| Time of closest approach (UTC) | 2024 Dec 29 14:16:50.628 |
| Minimum distance | 4.752 km |
| Height difference | -0.855 km |
| Relative speed | 10.406 km/s |
| Angle between velocity vectors | 88° |
| Geographic position | 71.4°S, 115.4°E |
| Height | 775 km |
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