| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | FENGYUN 1C DEB |
| Spacetrack catalog number | 35453 | 31929 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 19 15:23 | 2024 Dec 23 03:32 |
| Time of closest approach (UTC) | 2024 Dec 28 22:37:27.615 |
| Minimum distance | 3.819 km |
| Height difference | 3.787 km |
| Relative speed | 15.008 km/s |
| Angle between velocity vectors | 173° |
| Geographic position | 5.0°N, 44.2°E |
| Height | 725 km |
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