| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | FENGYUN 1C DEB |
| Spacetrack catalog number | 34729 | 30738 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 23 09:04 | 2024 Dec 23 18:00 |
| Time of closest approach (UTC) | 2024 Dec 28 06:28:16.552 |
| Minimum distance | 6.710 km |
| Height difference | 0.069 km |
| Relative speed | 14.081 km/s |
| Angle between velocity vectors | 138° |
| Geographic position | 73.6°N, 125.9°W |
| Height | 672 km |
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