| Primary satellite | Secondary satellite |
| Name | FENGYUN 1C DEB | COSMOS 2251 DEB |
| Spacetrack catalog number | 31357 | 35016 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 23 14:11 | 2024 Dec 20 02:41 |
| Time of closest approach (UTC) | 2024 Dec 26 03:27:31.147 |
| Minimum distance | 4.151 km |
| Height difference | -1.346 km |
| Relative speed | 14.845 km/s |
| Angle between velocity vectors | 170° |
| Geographic position | 42.2°S, 60.6°E |
| Height | 811 km |
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