| Primary satellite | Secondary satellite |
| Name | FENGYUN 1C DEB | COSMOS 2251 DEB |
| Spacetrack catalog number | 31656 | 33994 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 23 08:57 | 2024 Dec 23 12:16 |
| Time of closest approach (UTC) | 2024 Dec 25 06:41:58.072 |
| Minimum distance | 2.975 km |
| Height difference | 1.887 km |
| Relative speed | 14.807 km/s |
| Angle between velocity vectors | 165° |
| Geographic position | 59.6°S, 136.8°E |
| Height | 779 km |
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