| Primary satellite | Secondary satellite |
| Name | Cosmos 1844 Rocket | FENGYUN 1C DEB |
| Spacetrack catalog number | 17974 | 29772 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Jan 16 18:17 | 2021 Jan 16 10:57 |
| Time of closest approach (UTC) | 2020 Dec 04 00:10:06.492 |
| Minimum distance | 22.830 km |
| Height difference | 1.653 km |
| Relative speed | 14.839 km/s |
| Angle between velocity vectors | 169° |
| Geographic position | 12.7°S, 128.6°W |
| Height | 837 km |
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