| Primary satellite | Secondary satellite |
| Name | Cosmos 1842 | FENGYUN 1C DEB |
| Spacetrack catalog number | 17911 | 47022 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Jan 14 22:33 | 2021 Jan 14 10:32 |
| Time of closest approach (UTC) | 2020 Dec 02 03:02:16.790 |
| Minimum distance | 56.563 km |
| Height difference | -5.320 km |
| Relative speed | 15.215 km/s |
| Angle between velocity vectors | 177° |
| Geographic position | 74.6°S, 108.9°W |
| Height | 553 km |
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