| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | FENGYUN 1C DEB |
| Spacetrack catalog number | 35959 | 31566 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 22 15:36 | 2024 Dec 22 08:00 |
| Time of closest approach (UTC) | 2024 Dec 28 03:39:50.382 |
| Minimum distance | 2.395 km |
| Height difference | -0.110 km |
| Relative speed | 14.841 km/s |
| Angle between velocity vectors | 169° |
| Geographic position | 49.3°S, 60.5°E |
| Height | 798 km |
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