| Primary satellite | Secondary satellite |
| Name | Cosmos 1844 Rocket | FENGYUN 1C DEB |
| Spacetrack catalog number | 17974 | 30662 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Jan 17 10:55 | 2021 Jan 17 12:32 |
| Time of closest approach (UTC) | 2020 Dec 03 23:36:13.698 |
| Minimum distance | 29.480 km |
| Height difference | -0.903 km |
| Relative speed | 14.418 km/s |
| Angle between velocity vectors | 152° |
| Geographic position | 65.3°N, 103.7°E |
| Height | 856 km |
|