| Primary satellite | Secondary satellite |
| Name | FENGYUN 1C DEB | COSMOS 2251 DEB |
| Spacetrack catalog number | 31087 | 34001 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 22 12:50 | 2024 Dec 23 01:39 |
| Time of closest approach (UTC) | 2024 Dec 27 03:30:22.639 |
| Minimum distance | 2.455 km |
| Height difference | -1.493 km |
| Relative speed | 14.888 km/s |
| Angle between velocity vectors | 172° |
| Geographic position | 10.2°S, 54.3°E |
| Height | 763 km |
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