| Primary satellite | Secondary satellite |
| Name | Cosmos 1844 | FENGYUN 1C DEB |
| Spacetrack catalog number | 17973 | 31235 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2025 Jan 18 20:29 | 2025 Jan 16 04:26 |
| Time of closest approach (UTC) | 2024 Dec 07 13:01:44.712 |
| Minimum distance | 235.332 km |
| Height difference | -12.865 km |
| Relative speed | 13.757 km/s |
| Angle between velocity vectors | 136° |
| Geographic position | 68.7°S, 112.0°W |
| Height | 869 km |
|