| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | FENGYUN 1C DEB |
| Spacetrack catalog number | 34913 | 30481 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 23 07:23 | 2024 Dec 22 21:10 |
| Time of closest approach (UTC) | 2024 Dec 30 00:31:57.069 |
| Minimum distance | 1.589 km |
| Height difference | 1.164 km |
| Relative speed | 14.826 km/s |
| Angle between velocity vectors | 170° |
| Geographic position | 36.7°S, 75.0°W |
| Height | 805 km |
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