| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | FENGYUN 1C DEB |
| Spacetrack catalog number | 39554 | 31297 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 21 04:38 | 2024 Dec 23 06:12 |
| Time of closest approach (UTC) | 2024 Dec 26 13:45:41.757 |
| Minimum distance | 8.666 km |
| Height difference | -3.901 km |
| Relative speed | 14.514 km/s |
| Angle between velocity vectors | 146° |
| Geographic position | 72.2°N, 15.4°E |
| Height | 624 km |
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