| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | FENGYUN 1C DEB |
| Spacetrack catalog number | 35789 | 30214 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 22 14:34 | 2024 Dec 22 10:47 |
| Time of closest approach (UTC) | 2024 Dec 28 18:59:31.002 |
| Minimum distance | 4.496 km |
| Height difference | 2.302 km |
| Relative speed | 13.744 km/s |
| Angle between velocity vectors | 135° |
| Geographic position | 73.7°S, 79.2°E |
| Height | 818 km |
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