| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | FENGYUN 1C DEB |
| Spacetrack catalog number | 34908 | 31508 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2023 Jan 28 16:43 | 2023 Jan 28 04:13 |
| Time of closest approach (UTC) | 2022 Dec 06 18:35:18.601 |
| Minimum distance | 9.250 km |
| Height difference | 3.407 km |
| Relative speed | 14.805 km/s |
| Angle between velocity vectors | 172° |
| Geographic position | 20.5°S, 122.5°W |
| Height | 827 km |
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