| Primary satellite | Secondary satellite |
| Name | First-Move | FENGYUN 1C DEB |
| Spacetrack catalog number | 39439 | 47000 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2021 Feb 27 22:35 | 2021 Feb 27 21:44 |
| Time of closest approach (UTC) | 2021 Jan 20 01:37:34.912 |
| Minimum distance | 229.199 km |
| Height difference | -12.563 km |
| Relative speed | 14.911 km/s |
| Angle between velocity vectors | 162° |
| Geographic position | 29.5°N, 135.0°W |
| Height | 637 km |
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