| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | FENGYUN 1C DEB |
| Spacetrack catalog number | 35959 | 30750 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 22 15:36 | 2024 Dec 22 02:59 |
| Time of closest approach (UTC) | 2024 Dec 24 18:48:00.523 |
| Minimum distance | 4.379 km |
| Height difference | 4.379 km |
| Relative speed | 14.866 km/s |
| Angle between velocity vectors | 172° |
| Geographic position | 23.6°S, 49.4°E |
| Height | 802 km |
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