| Primary satellite | Secondary satellite |
| Name | Cosmos 1844 Rocket | FENGYUN 3A |
| Spacetrack catalog number | 17974 | 32958 |
| Radar cross section | large | large |
| Epoch of two-line elements (UTC) | 2021 Jan 24 05:25 | 2021 Jan 24 11:09 |
| Time of closest approach (UTC) | 2020 Nov 25 04:57:33.487 |
| Minimum distance | 37.689 km |
| Height difference | -1.704 km |
| Relative speed | 14.709 km/s |
| Angle between velocity vectors | 163° |
| Geographic position | 48.4°S, 20.4°W |
| Height | 843 km |
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