| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | FENGYUN 1C DEB |
| Spacetrack catalog number | 34572 | 37928 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 23 03:57 | 2024 Dec 21 13:12 |
| Time of closest approach (UTC) | 2024 Dec 26 05:36:06.443 |
| Minimum distance | 2.492 km |
| Height difference | 0.349 km |
| Relative speed | 14.781 km/s |
| Angle between velocity vectors | 163° |
| Geographic position | 62.8°N, 19.8°E |
| Height | 773 km |
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