| Primary satellite | Secondary satellite |
| Name | Cosmos 1844 Rocket | FENGYUN 1C DEB |
| Spacetrack catalog number | 17974 | 31264 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Jan 16 18:17 | 2021 Jan 15 18:19 |
| Time of closest approach (UTC) | 2020 Dec 07 07:08:07.557 |
| Minimum distance | 34.056 km |
| Height difference | 1.437 km |
| Relative speed | 5.866 km/s |
| Angle between velocity vectors | 47° |
| Geographic position | 51.8°N, 41.9°W |
| Height | 852 km |
|