| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | FENGYUN 1C DEB |
| Spacetrack catalog number | 35959 | 31365 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 22 15:36 | 2024 Dec 22 03:42 |
| Time of closest approach (UTC) | 2024 Dec 24 03:04:48.496 |
| Minimum distance | 2.262 km |
| Height difference | -1.598 km |
| Relative speed | 14.812 km/s |
| Angle between velocity vectors | 164° |
| Geographic position | 60.6°N, 130.3°E |
| Height | 775 km |
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