| Primary satellite | Secondary satellite |
| Name | Cosmos 2150 Rocket | FENGYUN 1C DEB |
| Spacetrack catalog number | 21419 | 37055 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Jan 19 20:12 | 2021 Jan 19 01:20 |
| Time of closest approach (UTC) | 2020 Dec 07 22:57:22.313 |
| Minimum distance | 3423.426 km |
| Height difference | 28.431 km |
| Relative speed | 7.533 km/s |
| Angle between velocity vectors | 61° |
| Geographic position | 71.8°N, 164.9°W |
| Height | 762 km |
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