| Primary satellite | Secondary satellite |
| Name | Cosmos 1975 | FENGYUN 1C DEB |
| Spacetrack catalog number | 19573 | 37403 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Jan 23 10:26 | 2021 Jan 23 02:28 |
| Time of closest approach (UTC) | 2020 Dec 07 18:46:08.919 |
| Minimum distance | 121.328 km |
| Height difference | 1.842 km |
| Relative speed | 15.131 km/s |
| Angle between velocity vectors | 173° |
| Geographic position | 67.7°N, 0.8°W |
| Height | 574 km |
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