| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | FENGYUN 1C DEB |
| Spacetrack catalog number | 34910 | 30284 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 22 20:21 | 2024 Dec 22 16:02 |
| Time of closest approach (UTC) | 2024 Dec 28 14:54:37.085 |
| Minimum distance | 2.045 km |
| Height difference | 1.717 km |
| Relative speed | 13.962 km/s |
| Angle between velocity vectors | 135° |
| Geographic position | 73.5°N, 74.3°E |
| Height | 795 km |
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