| Primary satellite | Secondary satellite |
| Name | FENGYUN 1C DEB | COSMOS 2251 DEB |
| Spacetrack catalog number | 31179 | 35885 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 21 06:50 | 2024 Dec 20 09:02 |
| Time of closest approach (UTC) | 2024 Dec 28 00:35:53.460 |
| Minimum distance | 1.360 km |
| Height difference | 0.503 km |
| Relative speed | 14.887 km/s |
| Angle between velocity vectors | 166° |
| Geographic position | 57.7°S, 85.6°E |
| Height | 790 km |
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