| Primary satellite | Secondary satellite |
| Name | FENGYUN 1C DEB | COSMOS 2251 DEB |
| Spacetrack catalog number | 31810 | 34064 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 20 18:39 | 2024 Dec 22 13:26 |
| Time of closest approach (UTC) | 2024 Dec 25 08:40:01.038 |
| Minimum distance | 2.379 km |
| Height difference | 1.822 km |
| Relative speed | 14.877 km/s |
| Angle between velocity vectors | 171° |
| Geographic position | 32.7°N, 148.9°E |
| Height | 772 km |
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