| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | FENGYUN 1C DEB |
| Spacetrack catalog number | 35789 | 30221 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 22 14:34 | 2024 Dec 23 04:06 |
| Time of closest approach (UTC) | 2024 Dec 24 23:48:43.173 |
| Minimum distance | 0.901 km |
| Height difference | 0.587 km |
| Relative speed | 14.452 km/s |
| Angle between velocity vectors | 150° |
| Geographic position | 71.5°N, 178.8°E |
| Height | 760 km |
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