| Primary satellite | Secondary satellite |
| Name | FENGYUN 1C DEB | COSMOS 2251 DEB |
| Spacetrack catalog number | 31633 | 34019 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 19 20:14 | 2024 Dec 22 18:28 |
| Time of closest approach (UTC) | 2024 Dec 26 06:19:57.900 |
| Minimum distance | 2.565 km |
| Height difference | 2.561 km |
| Relative speed | 6.535 km/s |
| Angle between velocity vectors | 52° |
| Geographic position | 60.6°N, 176.4°E |
| Height | 840 km |
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