| Primary satellite | Secondary satellite |
| Name | Cosmos 1943 | FENGYUN 3C |
| Spacetrack catalog number | 19119 | 39260 |
| Radar cross section | large | large |
| Epoch of two-line elements (UTC) | 2021 Apr 14 06:58 | 2021 Apr 14 09:25 |
| Time of closest approach (UTC) | 2021 Mar 04 12:04:31.489 |
| Minimum distance | 153.312 km |
| Height difference | -1.130 km |
| Relative speed | 4.656 km/s |
| Angle between velocity vectors | 36° |
| Geographic position | 41.1°N, 47.7°W |
| Height | 841 km |
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