| Primary satellite | Secondary satellite |
| Name | Cosmos 1844 Rocket | FENGYUN 1C DEB |
| Spacetrack catalog number | 17974 | 30662 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Jan 15 18:34 | 2021 Jan 15 11:18 |
| Time of closest approach (UTC) | 2020 Dec 03 23:36:23.990 |
| Minimum distance | 15.703 km |
| Height difference | -0.859 km |
| Relative speed | 14.418 km/s |
| Angle between velocity vectors | 152° |
| Geographic position | 65.2°N, 103.3°E |
| Height | 856 km |
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