| Primary satellite | Secondary satellite |
| Name | FENGYUN 1C DEB | COSMOS 2251 DEB |
| Spacetrack catalog number | 31452 | 33914 |
| Radar cross section | small | medium |
| Epoch of two-line elements (UTC) | 2024 Dec 19 16:57 | 2024 Dec 23 03:40 |
| Time of closest approach (UTC) | 2024 Dec 29 03:07:38.762 |
| Minimum distance | 3.685 km |
| Height difference | -3.290 km |
| Relative speed | 13.439 km/s |
| Angle between velocity vectors | 127° |
| Geographic position | 74.1°N, 178.9°E |
| Height | 831 km |
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