| Primary satellite | Secondary satellite |
| Name | Cosmos 1844 Rocket | FENGYUN 1C DEB |
| Spacetrack catalog number | 17974 | 30315 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Jan 17 10:55 | 2021 Jan 17 15:16 |
| Time of closest approach (UTC) | 2020 Nov 30 13:30:47.275 |
| Minimum distance | 30.518 km |
| Height difference | -4.062 km |
| Relative speed | 13.251 km/s |
| Angle between velocity vectors | 126° |
| Geographic position | 70.9°S, 119.2°E |
| Height | 850 km |
|