| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | FENGYUN 1C DEB |
| Spacetrack catalog number | 34588 | 30235 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 23 00:00 | 2024 Dec 23 00:46 |
| Time of closest approach (UTC) | 2024 Dec 29 22:26:56.952 |
| Minimum distance | 4.723 km |
| Height difference | 4.551 km |
| Relative speed | 14.855 km/s |
| Angle between velocity vectors | 164° |
| Geographic position | 61.0°N, 147.4°E |
| Height | 768 km |
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