| Primary satellite | Secondary satellite |
| Name | Cosmos 1844 Rocket | FENGYUN 1C DEB |
| Spacetrack catalog number | 17974 | 37447 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Jan 17 10:55 | 2021 Jan 13 21:52 |
| Time of closest approach (UTC) | 2020 Dec 01 03:55:59.346 |
| Minimum distance | 60.875 km |
| Height difference | -2.448 km |
| Relative speed | 12.485 km/s |
| Angle between velocity vectors | 114° |
| Geographic position | 71.0°N, 95.3°E |
| Height | 857 km |
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