| Primary satellite | Secondary satellite |
| Name | FENGYUN 1C DEB | Cosmos 1850 |
| Spacetrack catalog number | 38149 | 18095 |
| Radar cross section | small | large |
| Epoch of two-line elements (UTC) | 2024 Dec 16 17:49 | 2024 Dec 22 21:05 |
| Time of closest approach (UTC) | 2024 Dec 27 15:15:56.832 |
| Minimum distance | 4.052 km |
| Height difference | 2.057 km |
| Relative speed | 6.610 km/s |
| Angle between velocity vectors | 52° |
| Geographic position | 61.4°N, 24.3°E |
| Height | 780 km |
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