| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | FENGYUN 1C DEB |
| Spacetrack catalog number | 35970 | 30971 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 20 21:18 | 2024 Dec 22 11:03 |
| Time of closest approach (UTC) | 2024 Dec 30 00:44:21.053 |
| Minimum distance | 4.331 km |
| Height difference | 3.899 km |
| Relative speed | 15.203 km/s |
| Angle between velocity vectors | 173° |
| Geographic position | 24.3°N, 71.8°E |
| Height | 557 km |
|