| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | FENGYUN 1C DEB |
| Spacetrack catalog number | 37530 | 29875 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 19 01:13 | 2024 Dec 23 03:59 |
| Time of closest approach (UTC) | 2024 Dec 26 07:51:07.023 |
| Minimum distance | 0.121 km |
| Height difference | 0.118 km |
| Relative speed | 14.785 km/s |
| Angle between velocity vectors | 162° |
| Geographic position | 62.1°N, 168.7°W |
| Height | 782 km |
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