| Primary satellite | Secondary satellite |
| Name | Cosmos 1844 Rocket | FENGYUN 1C DEB |
| Spacetrack catalog number | 17974 | 36681 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Jan 24 05:25 | 2021 Jan 24 01:28 |
| Time of closest approach (UTC) | 2020 Nov 26 03:37:51.080 |
| Minimum distance | 227.203 km |
| Height difference | 4.310 km |
| Relative speed | 13.675 km/s |
| Angle between velocity vectors | 134° |
| Geographic position | 70.7°N, 97.9°E |
| Height | 856 km |
|