| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | FENGYUN 1C DEB |
| Spacetrack catalog number | 37530 | 31760 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 19 01:13 | 2024 Dec 22 03:17 |
| Time of closest approach (UTC) | 2024 Dec 29 22:33:48.992 |
| Minimum distance | 3.522 km |
| Height difference | 1.737 km |
| Relative speed | 14.939 km/s |
| Angle between velocity vectors | 172° |
| Geographic position | 33.8°N, 176.0°W |
| Height | 765 km |
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