| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | FENGYUN 1C DEB |
| Spacetrack catalog number | 35789 | 31294 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 22 14:34 | 2024 Dec 22 10:59 |
| Time of closest approach (UTC) | 2024 Dec 28 09:04:28.532 |
| Minimum distance | 4.799 km |
| Height difference | -1.944 km |
| Relative speed | 14.739 km/s |
| Angle between velocity vectors | 161° |
| Geographic position | 63.6°S, 62.9°W |
| Height | 802 km |
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