| Primary satellite | Secondary satellite |
| Name | Cosmos 1844 Rocket | FENGYUN 1C DEB |
| Spacetrack catalog number | 17974 | 32411 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Jan 24 05:25 | 2021 Jan 23 12:28 |
| Time of closest approach (UTC) | 2020 Nov 27 17:43:48.027 |
| Minimum distance | 38.873 km |
| Height difference | -1.513 km |
| Relative speed | 13.744 km/s |
| Angle between velocity vectors | 135° |
| Geographic position | 69.9°S, 52.6°E |
| Height | 850 km |
|