| Primary satellite | Secondary satellite |
| Name | FENGYUN 1C DEB | COSMOS 2251 DEB |
| Spacetrack catalog number | 31217 | 33948 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 21 19:55 | 2024 Dec 23 03:01 |
| Time of closest approach (UTC) | 2024 Dec 25 05:40:00.580 |
| Minimum distance | 2.841 km |
| Height difference | -1.503 km |
| Relative speed | 14.102 km/s |
| Angle between velocity vectors | 141° |
| Geographic position | 73.1°N, 162.7°E |
| Height | 781 km |
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