| Primary satellite | Secondary satellite |
| Name | FENGYUN 1C DEB | COSMOS 2251 DEB |
| Spacetrack catalog number | 30959 | 33994 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 20 11:11 | 2024 Dec 23 12:16 |
| Time of closest approach (UTC) | 2024 Dec 27 04:40:10.693 |
| Minimum distance | 1.975 km |
| Height difference | -1.771 km |
| Relative speed | 14.222 km/s |
| Angle between velocity vectors | 144° |
| Geographic position | 73.2°N, 62.0°E |
| Height | 777 km |
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