| Primary satellite | Secondary satellite |
| Name | Cosmos 1844 Rocket | FENGYUN 1C DEB |
| Spacetrack catalog number | 17974 | 30312 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Jan 16 18:17 | 2021 Jan 16 12:51 |
| Time of closest approach (UTC) | 2020 Dec 08 04:27:34.804 |
| Minimum distance | 38.969 km |
| Height difference | 1.954 km |
| Relative speed | 13.186 km/s |
| Angle between velocity vectors | 125° |
| Geographic position | 71.0°S, 126.4°W |
| Height | 850 km |
|