| Primary satellite | Secondary satellite |
| Name | Cosmos 1844 Rocket | FENGYUN 1C DEB |
| Spacetrack catalog number | 17974 | 29993 |
| Radar cross section | large | medium |
| Epoch of two-line elements (UTC) | 2021 Jan 24 05:25 | 2021 Jan 23 20:11 |
| Time of closest approach (UTC) | 2020 Nov 27 06:44:06.594 |
| Minimum distance | 161.557 km |
| Height difference | -1.538 km |
| Relative speed | 13.598 km/s |
| Angle between velocity vectors | 132° |
| Geographic position | 70.8°N, 48.7°E |
| Height | 856 km |
|