| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | FENGYUN 1C DEB |
| Spacetrack catalog number | 34910 | 30114 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 22 20:21 | 2024 Dec 23 06:49 |
| Time of closest approach (UTC) | 2024 Dec 28 11:14:47.484 |
| Minimum distance | 2.174 km |
| Height difference | -1.921 km |
| Relative speed | 9.737 km/s |
| Angle between velocity vectors | 81° |
| Geographic position | 70.1°N, 78.7°E |
| Height | 832 km |
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