| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | FENGYUN 1C DEB |
| Spacetrack catalog number | 40792 | 30492 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 20 08:02 | 2024 Dec 22 12:32 |
| Time of closest approach (UTC) | 2024 Dec 26 09:45:35.024 |
| Minimum distance | 1.390 km |
| Height difference | 1.254 km |
| Relative speed | 14.461 km/s |
| Angle between velocity vectors | 148° |
| Geographic position | 74.0°S, 23.2°E |
| Height | 707 km |
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