| 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 03 17:12:41.914 |
| Minimum distance | 53.934 km |
| Height difference | -2.177 km |
| Relative speed | 15.172 km/s |
| Angle between velocity vectors | 178° |
| Geographic position | 61.0°N, 117.3°W |
| Height | 567 km |
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