| Primary satellite | Secondary satellite |
| Name | FENGYUN 1C DEB | COSMOS 2251 DEB |
| Spacetrack catalog number | 31217 | 34120 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 21 19:55 | 2024 Dec 23 09:31 |
| Time of closest approach (UTC) | 2024 Dec 23 15:39:00.125 |
| Minimum distance | 4.748 km |
| Height difference | 4.610 km |
| Relative speed | 11.349 km/s |
| Angle between velocity vectors | 101° |
| Geographic position | 73.0°S, 72.6°E |
| Height | 939 km |
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