| Primary satellite | Secondary satellite |
| Name | FENGYUN 1C DEB | COSMOS 2251 DEB |
| Spacetrack catalog number | 31165 | 33830 |
| Radar cross section | small | medium |
| Epoch of two-line elements (UTC) | 2024 Dec 22 00:37 | 2024 Dec 23 00:56 |
| Time of closest approach (UTC) | 2024 Dec 24 09:47:45.307 |
| Minimum distance | 4.505 km |
| Height difference | 3.161 km |
| Relative speed | 14.975 km/s |
| Angle between velocity vectors | 173° |
| Geographic position | 16.9°S, 144.6°E |
| Height | 688 km |
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