| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | FENGYUN 1C DEB |
| Spacetrack catalog number | 34910 | 41003 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 22 20:21 | 2024 Dec 22 11:39 |
| Time of closest approach (UTC) | 2024 Dec 29 12:33:49.233 |
| Minimum distance | 2.488 km |
| Height difference | 1.792 km |
| Relative speed | 6.383 km/s |
| Angle between velocity vectors | 50° |
| Geographic position | 59.0°N, 155.1°E |
| Height | 782 km |
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