| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | FENGYUN 1C DEB |
| Spacetrack catalog number | 35462 | 38491 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 21 21:54 | 2024 Dec 17 18:53 |
| Time of closest approach (UTC) | 2024 Dec 25 22:54:11.340 |
| Minimum distance | 4.710 km |
| Height difference | -3.864 km |
| Relative speed | 14.901 km/s |
| Angle between velocity vectors | 171° |
| Geographic position | 34.9°S, 61.0°W |
| Height | 818 km |
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